Camera module, molded circuit board assembly, molded photosensitive assembly and manufacturing method thereof

ABSTRACT

A camera module, a molded circuit board assembly, a molded photosensitive assembly and manufacturing method thereof are disclosed. The camera module includes a molded base which is integrally formed with a circuit board through a molding process, wherein a photosensitive element may be electrically connected on the circuit board and at least a portion of a non-photosensitive area portion of the photosensitive element is also connected by the molded base through the molding process. A light window is formed in a central portion of the molded base to provide a light path for the photosensitive element, wherein a cross section of the light window is configured to have a trapezoidal or multi-step trapezoidal shape which has a size increasing from bottom to top to facilitate demoulding and avoiding stray lights.

CROSS REFERENCE OF RELATED APPLICATION

This application is a Continuation application that claims the benefitof priority under 35 U.S.C. § 120 to a non-provisional application whichis a Continuation application, application Ser. No. 16/569,601, filedSep. 12, 2019, that claims the benefit of a non-provisional applicationwhich is a Divisional application, application Ser. No. 15/785,374,filed Oct. 16, 2017, that claims the benefit of priority under 35 U.S.C.§ 120 to a non-provisional application which is a Continuationapplication, application Ser. No. 15/461,402, filed Mar. 16, 2017, thatclaims the benefit of priority under 35 U.S.C. § 120 to anon-provisional application, application Ser. No. 15/439,909, filed Feb.22, 2017, that claims the benefit of priority under 35 U.S.C. § 119 toChina application number CN201610622330.3, filing date Aug. 1, 2016,China application number CN201620826033.6, filing date Aug. 1, 2016,China application number CN201610626667.1, filing date Aug. 1, 2016, andChina application number CN201620826035.5, filing date Aug. 1, 2016,which are incorporated herewith by references in their entirety.

BACKGROUND OF THE PRESENT INVENTION Field of Invention

The present invention relates to camera modules, and more particularlyto a camera module and its molded circuit board assembly and moldedphotosensitive assembly, and manufacturing method thereof.

Description of Related Arts

A camera module is one of the indispensable components of an intelligentelectronic device such as smartphone, camera, computer device, wearabledevice, and the like. With the continuous development of a variety ofintelligent devices and their popularity, the camera module requirementsare getting higher and higher.

In recent years, intelligent electronic devices have been developed byleaps and bounds, wherein the growing trend of the intelligentelectronic devices is towards thinner and thinner, and the cameramodules are required to adapt to such development. The camera module isrequired to be multi-functional, lightweight and small, so thatelectronic devices can be thinner while meeting the imagingrequirements. Therefore, the camera module manufacturers continuouslyfocus on designing and manufacturing camera modules which meet theserequirements.

Molded packaging technology is an emerging packaging technologydeveloped from the conventional COB (Chip on Board) packagingtechnology. As shown in FIG. 1A of the drawings, the concept ofencapsulating a circuit board by a conventional integrated packagingtechnology is illustrated. In this structure, the encapsulation portion1 is integrally encapsulated on a circuit board 2 and a photosensitivechip 3, and the electronic components on the circuit board and the leadwires for electrically connecting the chip and the circuit board arecovered, so that the occupied space of the electronic components isreduced, the size of the camera module can be reduced, and the problemthat the dust attached to the electronic component affecting the imagequality of the camera module is solved.

Compared with the conventional holder-type COB packaging technology,this packaging technology has more advantages in theory. However, in aperiod of time, this packaging technology only stays in the theoreticalor manual experimental stages, and fails to achieve very good andpractical implement that has not been put into actual production forquantitative production. The reasons are following aspects.

Firstly, although the integral packaging technology in other largeindustrial areas such as semiconductor is a well-known technology, inthe field of camera module, it is a new application. Differentindustries need to mold different objects with different problems. Forexample, the body of a smartphone becomes thinner and thinner, so thatthe thickness of the smartphone becomes thinner and thinner too. As aresult, camera modules are also required to have such a relatively thinthickness, so that the overall thickness of the phone will not increasebecause of the camera modules. It is understandable that components ofthe camera module are manufactured in a relatively small size, so thatthe ideal structure of the camera module cannot be produced byconventional methods. In the above-described configuration, it isusually necessary to form a through-hole, which is usually designed tohave a square shape extended vertically, in the encapsulation portion 1to provide a light path for the photosensitive chip 3 on the circuitboard 2. Theoretically speaking, this conceptual structure does not havemuch substantial defects, but it does fail to take various massproduction factors into account. In other words, this technology is onlyin the manual test stage instead of being developed to be applied inactual mass production. More specifically, a molding mould is generallyneeded in the packaging technology, as shown in FIG. 1B and FIG. 1C ofthe drawings, wherein when a molding block 4 of an upper mould of themolding mould is in cubic shape, during a molding process, at thecontacting position of the upper mould and the encapsulation portion 1,the upper mould may adversely affect the shape of the encapsulationportion 1, as the bottom of the upper mould is in sharp square shape,while the mould is detaching from the molding material and causesdeformation of the encapsulation portion 1 such as forming flashes. Inaddition, when the upper mould is being pulled out and drafted away fromthe encapsulation portion 1, an outer side surface of the molding block4 of the upper mould and the encapsulation portion 1 have a largefrictional force therebetween that may cause damages to theencapsulation portion 1. The effect is likely to be negligible in anindustry of molding a product with relatively large size, but in thecamera module field which has a small size in precise configuration, itbecomes a critical factor. Therefore, the vertical prismatic columnshaped through-hole structure is feasible in theory but is not suitablefor mass productions in practice.

Secondly, a camera module is an optical electronic device and lightcapturing is an important factor to determine the image quality. Asshown in FIG. 1D of the drawings, in the conventional holder assemblingmanner, the holder 5 mounted on the circuit board is required to reservea mounting space 6 for the electronic components. The mounting space 6forms an indent space and increases the size of the camera module.However, after the light is captured, very little incident light willdirectly project to the inner wall of the holder, so that there is lessbeing reflected from the inner wall of the holder that will not affectthe imaging quality. As shown in FIG. 1E of the drawings, in comparisonwith the structure of the holder that no incident light through the lenswith an incident angle is reflected by the holder, when the holder isreplaced by the conventional cubic shaped encapsulation portion 1, theintegral package structure causes the inner wall of the encapsulationportion 1 reflecting the incident light to the photosensitive chip 3easily, that results in increasing the influence of stray light so thatthe imaging quality of the camera module is degraded. Accordingly, inthe aspect of the optical imaging quality, such rectangular shapedthrough-hole configuration formed in encapsulation portion 1 is notsuitable for utility application.

In addition, in order to assemble the encapsulation portion 1 into acamera module, it is necessary to mount a lens or a motor on theencapsulation portion 1, so that the encapsulation portion 1 is neededto meet a certain structural strength. Therefore, the shape of theencapsulation portion 1 is required to be designed in regard to variousfactors, including but not limited to the light flux, structuralstrength, light reflectivity, ease of demoulding, and damage preventionduring demoulding. However, the structure of the conventionalencapsulation portion 1 apparently failed to encounter all such factorsunder consideration.

SUMMARY OF THE PRESENT INVENTION

The invention is advantageous in that it provides a camera module andits molded circuit board assembly and manufacturing method thereof,wherein the camera module comprises the molded circuit board assemblymade by means of molding technology, wherein the molded circuit boardassembly is adapted for large-scale mass production by molding mouldsthrough molding process.

Another advantage of the invention is to provide a camera module and itsmolded circuit board assembly and manufacturing method thereof, whereinthe molded circuit board assembly comprises a circuit board and a moldedbase integrally formed on the circuit board, wherein the molded baseforms a light window, which is not a prismatic column shape of the priorart, so that in a manufacturing process, the damage to the molded baseby a light window forming block of a molding mould is reduced, and it isconvenient to remove the light window forming block.

Another advantage of the invention is to provide a camera module and itsmolded circuit board assembly and manufacturing method thereof, whereinat least one portion of the molded base integrally extended from thecircuit board and an optical axis direction form a first inclinationangle which is an acute angle and is benefit for demoulding of themolded base. In which, after the molded base is formed by the moldingprocess, the light window forming block is able to be smoothly pulledout to reduce friction with the molded base so that said molded base isremained unchanged to reduce the influence of the removal of the lightwindow forming block.

Another advantage of the invention is to provide a camera module and itsmolded circuit board assembly and manufacturing method thereof, whereinat least one portion of the inner side surface of the molded baseintegrally extended from the top surface of the circuit board and theoptical axis form an angle which is defined as a first inclinationangle, so that the light incident on the inner side surface is lesslikely to reach the photosensitive element, and the influence of thestray light on the image quality is reduced.

Another advantage of the invention is to provide a camera module and itsmolded circuit board assembly and manufacturing method thereof, whereinat least one outer side surface of the molded base and the optical axisform an angle which is an acute angle and is defined as a secondinclination angle, wherein when the molded base is manufactured by themolding mould and the dividing blocks of the molding mould are detachedat the outside of the molded base, the friction between the dividingblocks of the molding mould and the outer side surface of the moldedbase is remained unchanged such that the dividing blocks of the moldingmould are easy to demould and remove.

Another advantage of the invention is to provide a camera module and itsmolded circuit board assembly and manufacturing method thereof, whereinthe inner side of the molded base successively has a first portion innerside surface inclined from the circuit board, a second portion innerside surface extending from the first portion inner side surface, and athird portion inner side surface aslant extending from the secondportion inner side surface, wherein the third portion inner side surfaceand the optical axis form an angle which is an acute angle and isdefined as a third inclination angle, so that when the light windowforming block of the molded base is removed, the friction between thebase portion of the light window forming block and the inner side of thetop end of the molded base is reduced, and thus the second portion innerside surface of the molded base is remained unchanged such that thedividing blocks of the molding mould are easy to demould and remove.

Another advantage of the invention is to provide a camera module and itsmolded circuit board assembly and manufacturing method thereof, whereinthe first inclination angle is in a predetermined range to facilitatepulling out the molded base without damaging the molded base.

Another advantage of the invention is to provide a camera module and itsmolded circuit board assembly and manufacturing method thereof, whereinthe bottom side of the molding mould is generally provided with anelastic film layer and the inclination angles are not right-angles so asto prevent piercing through the film layer.

Another advantage of the invention is to provide a camera module and itsmolded circuit board assembly and manufacturing method thereof, whereinthe molded base has a top side surface and the first, second and thirdinclination angles are restricted within predetermined rangesrespectively to facilitate the removal of the light window forming blockand the dividing blocks, so that the size of the top side surface is nottoo small to provide a firm mounting area for a lens actuator or a lensof the camera module.

Another advantage of the invention is to provide a camera module and itsmolded circuit board assembly and manufacturing method thereof, whereinthe first, second and third inclination angles are restricted withinpredetermined ranges respectively to facilitate the removal of the lightwindow forming block and to provide a firm mounting area for an opticalfilter or an optical filter holder of the camera module.

Another advantage of the invention is to provide a camera module and itsmolded circuit board assembly and manufacturing method thereof, whereinthe molded base forms a sloped light window, which increases light fluxand meets the requirements of the field of view and angular incidence ofthe photosensitive element.

Another advantage of the invention is to provide a camera module and itsmolded circuit board assembly and manufacturing method thereof, whereineach of the demould angles is provided with a predetermined angularrange that secures the structural strength and the light reflectance ofthe molded base and reduces demould friction.

Another advantage of the invention is to provide a camera module and itsmolded photosensitive assembly and manufacturing method thereof, whereinthe camera module comprises the molded photosensitive assembly which iscapable of enabling a large-scale quantity production by a molding mouldthrough a molding process.

Another advantage of the invention is to provide a camera module and itsmolded photosensitive assembly and manufacturing method thereof, whereinthe molded photosensitive assembly comprises a circuit board, aphotosensitive element and a molded base integrally formed on thecircuit board and the photosensitive element, wherein the molded baseforms a light window which is not a prismatic column shape of the priorart, so that in a manufacturing process, the damage to the molded baseby a light window forming block of a molding mould is reduced, and it isconvenient to draft out the light window forming block.

Another advantage of the invention is to provide a camera module and itsmolded photosensitive assembly and manufacturing method thereof, whereinat least one portion of the molded base integrally extended from thephotosensitive element and an optical axis direction form a firstinclination angle which is an acute angle and is benefit for demouldingof the molded base, wherein after the molded base is formed by themolding process, the light window forming block is able to be smoothlypulled out to reduce friction with the molded base so that the moldedbase is remained unchanged to reduce the influence when detaching thelight window forming block.

Another advantage of the invention is to provide a camera module and itsmolded photosensitive assembly and manufacturing method thereof, whereinat least one inner side surface of the molded base integrally extendedfrom the top surface of the photosensitive element and the optical axisform an angle which is defined as a first inclination angle, so that thelight incident on the inner side surface is less likely to reach thephotosensitive element, and the influence of the stray light on theimage quality is reduced.

Another advantage of the invention is to provide a camera module and itsmolded photosensitive assembly and manufacturing method thereof, whereinat least one outer side surface of the molded base and the optical axisform an angle which is an acute angle and is defined as a secondinclination angle, wherein when the molded base is manufactured by themolding mould and the dividing blocks of the molding mould are detachedfrom on outside of the molded base, the friction between the dividingblocks of the molding mould and the outer side surface of the moldedbase is remained unchanged such that the dividing blocks of the moldingmould are easy to pull out.

Another advantage of the invention is to provide a camera module and itsmolded photosensitive assembly and manufacturing method thereof, whereinthe inner side of the molded base successively has a first portion innerside surface inclined from the photosensitive element, a second portioninner side surface extended from the first portion inner side surface,and a third portion inner side surface inclined from the second portioninner side surface, wherein the third portion inner side surface and theoptical axis form an angle which is an acute angle and is defined as athird inclination angle, so that when the light window forming block ofthe molded base is pulled out, the friction between the base portion ofthe light window forming block and the inner side of the top portion ofthe molded base is reduced, so that the second portion inner sidesurface of the molded base is remained unchanged such that the moldingmould is easy for detachment.

Another advantage of the invention is to provide a camera module and itsmolded photosensitive assembly and manufacturing method thereof, whereinthe first inclination angle is in a predetermined range to facilitatepulling out the molded base without damaging the lead wires connectingthe photosensitive element and the circuit board.

Another advantage of the invention is to provide a camera module and itsmolded photosensitive assembly and manufacturing method thereof, whereinthe bottom side of the molding mould is generally provided with anelastic film layer and the inclination angles are not right-angles so asto prevent piercing through the film layer.

Another advantage of the invention is to provide a camera module and itsmolded photosensitive assembly and manufacturing method thereof, whereinthe molded base has a top side surface and the first, second and thirdinclination angles are restricted within predetermined rangesrespectively to facilitate the removal of the light window forming blockand the dividing blocks, so that the size of the top side surface is nottoo small to provide a firm mounting area for a lens actuator or a lensof the camera module.

Another advantage of the invention is to provide a camera module and itsmolded photosensitive assembly and manufacturing method thereof, whereinthe first, second and third inclination angles are restricted withinpredetermined ranges respectively to facilitate removal of the lightwindow forming block and to provide a firm mounting area for an opticalfilter or an optical filter holder of the camera module.

Another advantage of the invention is to provide a camera module and itsmolded photosensitive assembly and manufacturing method thereof, whereinthe molded base forms a sloped light window which increases the lightflux and meets the requirements of the field of view and angularincidence of the photosensitive element.

Another advantage of the invention is to provide a camera module and itsmolded photosensitive assembly and manufacturing method thereof, whereineach of the draft angles is provided with a predetermined angular rangeso as to secure a structural strength and a small light reflectance ofthe molded base and reduce the demoulding friction.

Additional advantages and features of the invention will become apparentfrom the description which follows, and may be realized by means of theinstrumentalities and combinations particularly pointing out in theappended claims.

According to one aspect of the present invention, the present inventionprovides a molded circuit board assembly, for a camera module,comprising at least one circuit board, and at least one molded baseintegrally formed with the circuit board through a molding process,wherein the molded base forms at least one light window which provides alight path for a photosensitive element of the camera module, and atleast one portion of an inner side surface of the molded base which isintegrally extended form the circuit board is aslant extended.

According to another aspect of the present invention, the presentinvention provides a molded photosensitive assembly, for a cameramodule, comprising at least one circuit board, at least onephotosensitive element, and at least one molded base integrally formedwith the circuit board and the photosensitive element through a moldingprocess, wherein the molded base forms at least one light windowdisposed corresponding to the photosensitive element, and at least oneportion of an inner side surface of the molded base integrally extendedform the photosensitive element is aslant extended for easy demouldingin the molding process.

According to another aspect of the present invention, the presentinvention provides a camera module comprising at least one lens, atleast one photosensitive element, at least one circuit board, and atleast one molded base, wherein the molded base is integrally formed withthe circuit board through a molding process, wherein the molded baseforms at least one light window which provides a light path for thephotosensitive element, wherein the molded base has an inner sidesurface, and at least one portion of the inner side surface is aslantextended for easy demoulding in the molding process. Accordingly, whenthe circuit board and the molded base form a molded circuit boardassembly, the inner side surface of the molded base is integrallyextended from the circuit board, wherein when the molded base isintegrally formed with the circuit board and the photosensitive elementto form a molded photosensitive assembly, the inner side surface of themolded base is integrally extended from the photosensitive element.

According to another aspect of the present invention, the presentinvention provides an electronic device comprising one or more cameramodules and the electronic device can be, but not limited to, a mobilephone, a computer, a television, an intelligent wearable equipment, atransportation tool, a camera, and a monitoring device.

According to another aspect of the present invention, the presentinvention provides a molding mould, for manufacturing at least onemolded circuit board assembly of a camera module, comprising a firstmould and a second mould, wherein when the first mould and the secondmould are united to form a molding chamber therebetween, wherein atleast one light window forming block and a base forming guide groovedisposed around the light window forming block are provided in themolding chamber of the molding mould, wherein when at least one circuitboard is mounted in the molding chamber, a molding material filled inthe base forming guide groove is solidified from a liquid state to asolid state under temperature control, wherein a molded base is formedat a position corresponding to the base forming guide groove and a lightwindow of the molded base is formed at a position corresponding to thelight window forming block, wherein the molded base is integrally moldedon the circuit board so as to form the molded circuit board assembly ofthe camera module. A cross section of the light window forming block isconfigured to have a trapezoidal or multi-step trapezoidal shape whichhas diameters increasing from bottom to top to facilitate demoulding.

According to another aspect of the present invention, the presentinvention provides a molding mould, for manufacturing at least onemolded photosensitive assembly of a camera module, comprising a firstmould and a second mould, wherein when the first mould and the secondmould are united to form a molding chamber therebetween, wherein atleast one light window forming block and a base forming guide groovedisposed around the light window forming block are provided in themolding chamber of the molding mould, wherein when at least one circuitboard electrically connected with at least one photosensitive element ismounted in the molding chamber, a molding material filled in the baseforming guide groove is solidified from a liquid state to a solid stateunder a temperature control, wherein a molded base is formed at aposition corresponding to the base forming guide groove and a lightwindow of the molded base is formed at a position corresponding to thelight window forming block, wherein the molded base is integrally moldedon the circuit board and at least one portion of a non-photosensitivearea portion of the photosensitive element so as to form the moldedphotosensitive assembly of the camera module. A cross section of thelight window forming block is configured to have a trapezoidal ormulti-step trapezoidal shape which has diameters increasing from bottomto top to facilitate demoulding.

According to another aspect of the present invention, the presentinvention provides an integral piece of molded circuit board assemblyarray which comprises an integral piece of circuit board array and anintegral piece of molded base array, wherein the integral piece ofcircuit board array comprises a plurality of circuit boards, wherein theintegral piece of molded base array comprises a plurality of moldedbases integrally formed with the plurality of the circuit boardsrespectively through a molding process, wherein each of the molded basesforms at least one light window which provides a light path for aphotosensitive element of the camera module, and at least one portion ofan inner side surface of the molded base which is integrally extendedform the circuit board is aslant extended for facilitating easydemoulding of a molding mould in the molding process.

According to another aspect of the present invention, the presentinvention provides an integral piece of molded photosensitive assemblyarray which comprises an integral piece of circuit board array and anintegral piece of molded base array, wherein the integral piece ofcircuit board array comprises a plurality of circuit boards, whereineach of the circuit boards is electrically connected with at least onephotosensitive element, wherein the integral piece of molded base arraycomprises a plurality of molded bases integrally formed with theplurality of the circuit boards and the photosensitive elementsrespectively through a molding process, wherein each of the molded baseforms at least one light window which provides a light path for thecorresponding photosensitive element of the camera module, and at leastone portion of an inner side surface of the molded base which isintegrally extended form the photosensitive element is aslant extendedfor facilitating easy demoulding of a molding mould in the moldingprocess.

According to another aspect of the present invention, the presentinvention provides a method for manufacturing a molded circuit board ofa camera module, comprising the following steps.

(a) Place at least one circuit board in a second mould of a moldingmould.

(b) Fill a liquid molding material into at least one base forming guidegroove when the second mould and a first mould are in a closed-mouldposition, wherein a position corresponding to at least one light windowmolding block of the first mould is prevented from filling in the liquidmaterial, wherein the base forming groove is disposed around the lightwindow molding block.

(c) Solidify the molding material filled into the base forming guidegroove from a liquid state to a solid state.

(d) Demould the first mould from the second mould, wherein a crosssection of the light window forming block is configured to have atrapezoidal or multi-step trapezoidal shape which has diametersincreasing from bottom to top to facilitate demoulding, wherein a moldedbase is formed at a position corresponding to said base forming guidegroove, wherein a light window of the molded base is formed at aposition corresponding to the light window molding block, wherein themolded base is integrally molded on the circuit board so as to form themolded circuit board of the camera module.

According to another aspect of the present invention, the presentinvention provides a method for manufacturing a molded photosensitiveassembly of a camera module, comprising the following steps.

(A) Place at least one circuit board with a photosensitive elementelectrically provided thereon in a second mould of a molding mould.

(B) Fill a liquid molding material into at least one base forming guidegroove when the second mould and a first mould are in a closed-mouldposition, wherein a position corresponding to at least one light windowmolding block of the first mould is prevented from filling in the liquidmaterial, wherein the base forming groove is disposed around the lightwindow molding block.

(C) Solidify the molding material filled into the base forming guidegroove from a liquid state to a solid state.

(D) Demould the first mould from the second mould, wherein a crosssection of the light window forming block is configured to have atrapezoidal or multi-step trapezoidal shape which has diametersincreasing from bottom to top to facilitate demoulding, wherein a moldedbase is formed at a position corresponding to said base forming guidegroove, wherein a light window of the molded base is formed at aposition corresponding to the light window molding block, wherein themolded base is integrally molded on the circuit board and thephotosensitive element, so as to form the molded photosensitive assemblyof the camera module.

Still further objects and advantages will become apparent from aconsideration of the ensuing description and drawings.

These and other objectives, features, and advantages of the presentinvention will become apparent from the following detailed description,the accompanying drawings, and the appended claims.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG. 1A is a schematic view of a conventional molded photosensitiveassembly manufactured by a conventional encapsulation technology.

FIG. 1B is a schematic view of a conventional forming process formanufacturing the conventional encapsulated photosensitive assembly.

FIG. 1C is a schematic view of a demoulding process in the conventionalencapsulating process for manufacturing the conventional encapsulatedphotosensitive assembly.

FIG. 1D is a schematic view illustrating a light path of a camera modulepackaged by a conventional COB technology.

FIG. 1E is a schematic view illustrating a light path of a camera moduleby a conventional integrally packaging technology.

FIG. 2 is a schematic diagram illustrating a molded circuit boardassembly of a camera module according to a first preferred embodiment ofthe present invention.

FIG. 3A is an exploded perspective view of the camera module accordingto the above first preferred embodiment of the present invention.

FIG. 3B is a cross-sectional view of the camera module along an axialdirection according to the above first preferred embodiment of thepresent invention.

FIG. 4 is a perspective view of the molded circuit board assemblyaccording to the above first preferred embodiment of the presentinvention.

FIG. 5 is a cross-sectional view illustrating the molding mould of thecamera module according to the above first preferred embodiment of thepresent invention along an A-A line of FIG. 4.

FIG. 6 is a partially enlarged sectional view illustrating aninclination angle, which is convenient for demoulding of the cameramodule according to the above first preferred embodiment of the presentinvention.

FIG. 7 is a cross-sectional view illustrating the avoiding stray lightsof the camera module according to the above first preferred embodimentof the present invention.

FIG. 8A is a cross-sectional view of the molded circuit board assembly,along an A-A line of the FIG. 4, according to the above first preferredembodiment of the present invention, illustrating that a liquid moldingmaterial is pushed into a base forming guide groove by a molding mould.

FIG. 8B is a cross-sectional view of the molded circuit board assembly,along the A-A line of the FIG. 4, according to the above first preferredembodiment of the present invention, illustrating that the molding mouldof a manufacturing equipment performs the molding process to form amolded base.

FIG. 9 is a cross-sectional view illustrating a demoulding process ofthe molded circuit board assembly according to the above first preferredembodiment of the present invention.

FIG. 10 is an exploded perspective view of the molded circuit boardassembly according to a second preferred embodiment of the presentinvention.

FIG. 11 is a cross-sectional view of the camera module along an axialdirection according to the above second preferred embodiment of thepresent invention.

FIG. 12 is a cross-sectional view of the camera module according to analternative mode of the above second preferred embodiment of the presentinvention.

FIG. 13 is a perspective view of molded circuit board assembly of thecamera module according to the above second preferred embodiment of thepresent invention.

FIG. 14 is a cross-sectional view of the molding mould of the cameramodule according to the above second preferred embodiment of the presentinvention along a C-C line of FIG. 13.

FIG. 15 is a partially enlarged sectional view illustrating aninclination angle, which is convenient for demoulding of the cameramodule according to the above second preferred embodiment of the presentinvention.

FIG. 16 is a cross-sectional view of the molded circuit board assembly,along a C-C line of the FIG. 13, according to the above second preferredembodiment of the present invention, illustrating that a liquid moldingmaterial is pushed into a base forming guide groove by a molding mould.

FIG. 17 is a cross-sectional view of the molded circuit board assembly,along the C-C line of the FIG. 13, according to the above secondpreferred embodiment of the present invention, illustrating that aliquid molding material is pushed into the base forming guide groove bythe molding mould.

FIG. 18 is a cross-sectional view of the molded circuit board assembly,along an E-E line of the FIG. 13, according to the above secondpreferred embodiment of the present invention, illustrating that themolding mould performs the molding process to form an integral piece ofmolded bases array.

FIG. 19 is a cross-sectional view illustrating a demoulding process ofthe molded circuit board assembly according to the above secondpreferred embodiment of the present invention.

FIG. 20 is a perspective view of an integral piece of molded circuitboard assembly array manufactured by the molding process according tothe above second preferred embodiment of the present invention.

FIG. 21 is a perspective view of a separated molded circuit boardassembly being cut down from the integral piece of molded circuit boardassembly array in the molding process according to the above secondpreferred embodiment of the present invention.

FIG. 22 is a perspective view of a molded circuit board assemblyaccording to an alternative mode of the above second preferredembodiment of the present invention.

FIG. 23 is a cross-sectional view of a molded circuit board assemblyaccording to an alternative mode of the above second preferredembodiment of the present invention.

FIG. 24 is a cross-sectional view of a molded circuit board assemblyaccording to an alternative mode of the above second preferredembodiment of the present invention.

FIG. 25 is a schematic view illustrating the above camera module appliedon a mobile phone according to the above embodiments of the presentinvention.

FIG. 26 is a partially enlarged sectional view of the molded circuitboard assembly illustrating an inclination angle thereof for convenientdemoulding of the molded circuit board assembly manufactured by themolding process according to a first example of the above secondembodiment of the present invention.

FIG. 27 is a partially enlarged sectional view of the molded circuitboard assembly illustrating an inclination angle thereof for convenientfor demoulding of the molded circuit board assembly manufactured by themolding process according to a second example of the above secondembodiment of the present invention.

FIG. 28 is a partially enlarged sectional view of the molded circuitboard assembly illustrating an inclination angle thereof for convenientfor demoulding of the molded circuit board assembly manufactured by themolding process according to a third example of the above secondembodiment of the present invention.

FIG. 29 is a partially enlarged sectional view of the molded circuitboard assembly illustrating an inclination angle thereof for convenientfor demoulding of the molded circuit board assembly manufactured by themolding process according to a fourth example of the above secondembodiment of the present invention.

FIG. 30 is a schematic diagram of a molded photosensitive assembly of acamera module according to a third preferred embodiment of the presentinvention.

FIG. 31A is an exploded perspective view of the camera module accordingto the above third preferred embodiment of the present invention.

FIG. 31B is a cross-sectional view of the camera module along an axialdirection according to the above third preferred embodiment of thepresent invention.

FIG. 32 is a perspective view of the molded photosensitive assemblyaccording to the above third preferred embodiment of the presentinvention.

FIG. 33 is a cross-sectional view of the molding mould of the cameramodule, along an A′-A′ line of FIG. 32, according to the above thirdpreferred embodiment of the present invention.

FIG. 34 is a partially enlarged sectional view illustrating aninclination angle, which is convenient for demoulding of the cameramodule according to the above third preferred embodiment of the presentinvention.

FIG. 35 is a cross-sectional view illustrating the avoiding stray lightsof the camera module according to the above third preferred embodimentof the present invention.

FIG. 36A is a cross-sectional view of the molded photosensitiveassembly, along an A′-A′ line of the FIG. 32, according to the abovepreferred embodiment of the present invention, illustrating that aliquid molding material is pushed into a base forming guide groove by amolding mould.

FIG. 36B is a cross-sectional view of the molded photosensitiveassembly, along the A′-A′ line of the FIG. 32, according to the abovepreferred embodiment of the present invention, illustrating that themolding mould of a manufacturing equipment performs the molding processto form a molded base.

FIG. 36C is a cross-sectional view illustrating a demoulding process ofthe molded photosensitive assembly according to the above thirdpreferred embodiment of the present invention.

FIG. 37 is a cross-sectional view of a molded photosensitive assemblyaccording to an alternative mode of the above third preferred embodimentof the present invention.

FIG. 38 is an exploded perspective view of a molded photosensitiveassembly according to a fourth preferred embodiment of the presentinvention.

FIG. 39 is a cross-sectional view of the camera module along an axialdirection according to the above fourth preferred embodiment of thepresent invention.

FIG. 40 is a cross-sectional view of the camera module according to analternative mode of the above fourth preferred embodiment of the presentinvention.

FIG. 41 is a perspective view of a molded photosensitive assembly of thecamera module assembled according to the above fourth preferredembodiment of the present invention.

FIG. 42 is a cross-sectional view of the molding mould of the cameramodule, along a C′-C′ line of FIG. 41, according to the above fourthpreferred embodiment of the present invention.

FIG. 43 is a partially enlarged sectional view illustrating aninclination angle, which is convenient for demoulding of the cameramodule according to the above fourth preferred embodiment of the presentinvention.

FIG. 44 is a cross-sectional view of the molded photosensitive assembly,along a C′-C′ line of the FIG. 41, according to the above fourthpreferred embodiment of the present invention, illustrating that aliquid molding material is pushed into a base forming guide groove by amolding mould.

FIG. 45 is a cross-sectional view of the molded photosensitive assembly,along the C′-C′ line of the FIG. 41, according to the above fourthpreferred embodiment of the present invention, illustrating that aliquid molding material is pushed into the base forming guide groove bythe molding mould.

FIG. 46 is a cross-sectional view of the molded photosensitive assembly,along an E′-E′ line of the FIG. 41, according to the above fourthpreferred embodiment of the present invention, illustrating that themolding mould performs the molding process to form an integral piece ofmolded base array.

FIG. 47 is a schematic view illustrating a demoulding process of themolded photosensitive assembly according to the above fourth preferredembodiment of the present invention.

FIG. 48 is a perspective view of an integral piece of moldedphotosensitive assembly array manufactured by the molding processaccording to the above fourth preferred embodiment of the presentinvention.

FIG. 49 is a schematic view of a separated molded photosensitiveassembly being cut down from the integral piece of molded photosensitiveassembly array in the molding process according to the above fourthpreferred embodiment of the present invention.

FIG. 50 is a cross-sectional view of a molded photosensitive assemblyaccording to an alternative mode of the above fourth preferredembodiment of the present invention.

FIG. 51 is a cross-sectional view of a molded photosensitive assemblyaccording to an alternative mode of the above fourth preferredembodiment of the present invention.

FIG. 52 is a cross-sectional view of a molded photosensitive assemblyaccording to an alternative mode of the above fourth preferredembodiment of the present invention.

FIG. 53 is a schematic view of the above camera module applied on amobile phone according to the above embodiments of the presentinvention.

FIG. 54 is a partially enlarged sectional view of the moldedphotosensitive assembly, illustrating an inclination angle thereof forconvenient for demoulding of the molded photosensitive assemblymanufactured by the molding process according to a first example of theabove fourth preferred embodiment of the present invention.

FIG. 55 is a partially enlarged sectional view of the moldedphotosensitive assembly, illustrating an inclination angle thereof forconvenient for demoulding of the molded photosensitive assemblymanufactured by the molding process according to a second example of theabove fourth preferred embodiment of the present invention.

FIG. 56 is a partially enlarged schematic view of the moldedphotosensitive assembly, illustrating an inclination angle thereof forconvenient for demoulding of the molded photosensitive assemblymanufactured by the molding process according to a third example of theabove fourth preferred embodiment of the present invention.

FIG. 57 is a partially enlarged sectional view of the moldedphotosensitive assembly, illustrating an inclination angle thereof forconvenient for demoulding of the molded photosensitive assemblymanufactured by the molding process according to a fourth example of theabove fourth preferred embodiment of the present invention.

FIG. 58 is a partially enlarged sectional view of the moldedphotosensitive assembly, illustrating an inclination angle thereof forconvenient for demoulding of the molded photosensitive assemblymanufactured by the molding process according to a fifth example of theabove fourth preferred embodiment of the present invention.

FIG. 59 is a partially enlarged sectional view of the moldedphotosensitive assembly, illustrating an inclination angle thereof forconvenient for demoulding of the molded photosensitive assemblymanufactured by the molding process according to a sixth example of theabove fourth preferred embodiment of the present invention.

FIG. 60 is a partially enlarged sectional view of the moldedphotosensitive assembly, illustrating an inclination angle thereof forconvenient for demoulding of the molded photosensitive assemblymanufactured by the molding process according to a seventh example ofthe above fourth preferred embodiment of the present invention.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT

The following description is disclosed to enable any person skilled inthe art to make and use the present invention. Preferred embodiments areprovided in the following description only as examples and modificationswill be apparent to those skilled in the art. The general principlesdefined in the following description would be applied to otherembodiments, alternatives, modifications, equivalents, and applicationswithout departing from the spirit and scope of the present invention.

Those skilled in the art should understand that, in the disclosure ofthe present invention, terminologies of “longitudinal,” “lateral,”“upper,” “front,” “back,” “left,” “right,” “perpendicular,”“horizontal,” “top,” “bottom,” “inner,” “outer,” and etc. that indicaterelations of directions or positions are based on the relations ofdirections or positions shown in the appended drawings, which are onlyto facilitate descriptions of the present invention and to simplify thedescriptions, rather than to indicate or imply that the referred deviceor element is limited to the specific direction or to be operated orconfigured in the specific direction. Therefore, the above-mentionedterminologies shall not be interpreted as confine to the presentinvention.

It is understandable that the term “a” or “an” should be understood as“at least one” or “one or more”. In other words, in some embodiments,the number of an element can be one and in other embodiment the numberof the element can be more than one. The term “a” or “an” is notconstrued as a limitation of quantity.

Referring to FIG. 1 to FIG. 9 of the drawings, a camera module 100according to a first preferred embodiment of the present invention isillustrated. The camera module 100 can be applied to various electronicdevices, such as smart phone, wearable device, computer equipment,television, vehicle, camera, monitoring device, and etc., wherein theelectronic devices disclosed above are exemplary only and not intendedto be limiting. The camera module 100 is equipped with an electronicdevice to perform image acquisition and reproduction of a target object.

More specifically, a molded circuit board assembly 10 of the cameramodule 100 and a manufacturing equipment 200 for the camera module 100are illustrated according to the first preferred embodiment of thepresent invention. The molded circuit board assembly 10 comprises acircuit board 11 and a molded base 12. Wherein the molded base 12 of thepresent invention is integrally packaged and molded on the circuit board11 by the manufacturing equipment 200, wherein the molded base 12 iscapable of substitute the conventional holder or support of theconventional camera module which is generally adhered to the circuitboard by the conventional packaging process by means of glue.

The camera module 100 further comprises a lens 30 and a photosensitiveelement 13. Wherein the molded base 12 comprises an annular molding body121 and has a light window 122 defined in a middle of the molding body121 to provide a light path between the lens 30 and the photosensitiveelement 13. The photosensitive element 13 is operatively andelectrically connected to the circuit board 11. For example, thephotosensitive element 13 is connected to the circuit board 11 by leadwires through a COB process, and the photosensitive element 13 ispositioned on a top side of the circuit board 11. The photosensitiveelement 13 and the lens 30 are respectively assembled on two sides ofthe molded base 12 and are optical aligned in such a manner that thelight passing through the lens 30 is able to reach the photosensitiveelement 13 via the light window 122, so that the camera module 100 isable to produce an optical image through a photoelectric conversionprocess.

As shown in FIG. 3A and FIG. 3B of the drawings, the camera module 100which is embodied as an automatic-focus camera module further comprisesa lens actuator 40 such as voice coil motor and piezoelectric motor,wherein the lens 30 is mounted in the lens actuator 40. The molded base12 supports the lens actuator 40. An optical filter 50 which can be aninfrared cut-off filter is provided on a top side of the molded base 12to filter lights which pass through the lens 30. The automatic-focuscamera module in this embodiment of the present invention as shown inthe drawings and described above is exemplary only and not intended tobe limiting. In other embodiment of the present invention, the lens 30can be mounted on the molded circuit board assembly 10 without the lensactuator 40. In other words, the camera module 100 can be a fixed focuscamera module, one skilled in the art will understand that the type ofthe camera module is not intended to be limiting and the camera module100 can be a fixed focus camera module or an automatic-focus cameramodule.

The circuit board 11 comprises a base board 111 and a plurality ofelectronic components 112. The plurality of electronic components 112 isformed on the base board 111 using a technology such as the surfacemount technology. The electronic components 112 include but are notlimited to resistors, capacitors, and other device drivers. In thisembodiment of the invention, the molded base 12 is integrally coated onthe electronic components 112 to further prevent objects such as dustsand debris of a conventional camera module from adhering to theelectronic components 112 to further pollute the photosensitive element13 that affects the imaging results. It is understandable that, in analternative mode of the embodiment, the electronic components 112 areburied in the base board 111 that, in other words, the electroniccomponents 112 are not exposed to outside. The base board 111 of thecircuit board 11 can be a rigid PCB, a flexible PCB, a rigid-flex PCB ora ceramic substrate. It is worth mentioning that in this preferredembodiment of the present invention, since the molded base 12 isintegrally molded on the electronic components 112, the electroniccomponents 112 are able to be not buried in the base board 111. The baseboard 111 is used to form electric conductive lines, so that the finallyobtained molded circuit board assembly 10 has a smaller thickness.

In this preferred embodiment of the present invention, thephotosensitive element 13 is overlapped on a flat overlapping region ofthe circuit board 11 which is at an inner side of the electroniccomponents 112. The photosensitive element 13 has a top surface 131. Thetop surface 131 has a photosensitive area portion 1311 in the centerthereof and a non-photosensitive area portion 1312 positioned around thephotosensitive area portion 1311. The photosensitive element 13 iselectrically conducted to the circuit board 11 by one or more connectingelements such as lead wires 15. More specifically, the photosensitiveelement 13 has a photosensitive element connecting pad 132 and thecircuit board 11 has a circuit board connecting pad 113. Two ends of thelead wires 15 are electrically connected to the photosensitive elementconnecting pad 132 and the circuit board connecting pad 113respectively.

Furthermore, as shown in FIG. 2 of the drawing, the manufacturingequipment 200 for the molded circuit board assembly 10 of the cameramodule 100 comprises a molding mould 210, a molding material feedingmechanism 220, a mould fixing unit 230, a temperature control unit 250,and a controller 260. The molding material feeding mechanism 220supplies a molding material 14 to a base forming guide groove 215 of themolding mould 210. The mould fixing unit 230 is operated to control anopened-mould position and a closed-mould position of the molding mould210. The temperature control unit 250 is operated to heat or cool themolding material 14. The controller 260 automatically controlsoperations of the molding material feeding mechanism 220, the mouldfixing unit 230 and the temperature control unit 250 in the moldingprocess.

The molding mould 210 comprises a first mould 211 and a second mould212. The first mould 211 and the second mould 212 are able to beoperated between an opened-mould position and a closed-mould positionunder control of the mould fixing unit 2°. In other words, the mouldfixing unit 230 enables to separate the first mould 211 and the secondmould 212 to open the molding mould 210 and to close the first mould 211and the second mould 212 to define a molding chamber 213 between thefirst mould 211 and the second mould 212. When the molding mould 210 isin the closed-mould position, the circuit board 11 is placed and fixedwithin the molding chamber 213 and the liquid molding material 14 entersinto the molding chamber 213 and is integrally molded on the circuitboard 11 to from the molded base 12 which is integrally molded on thecircuit board 11 after solidifications.

More specifically, the molding mould 210 further comprises a lightwindow forming block 214 and the base forming guide groove 215 formedaround the light window forming block 214. When the first mould 211 andthe second mould 212 are in the closed-mould position, the light windowforming block 214 and the base forming guide groove 215 are extendedinside of the molding chamber 213 and the liquid molding material 14 isfilled into the base forming guide groove 215, as the positioncorresponding to the light window forming block 214 cannot be filledwith the liquid molding material 14. Accordingly, the liquid moldingmaterial 14 forms the annular molding body 121 of the molded base 12 atthe position of the base forming guide groove 215 and the light window122 of the molded base 12 is formed at the position of the light windowforming block 214 after solidification. The material of the moldingmaterial 14 is selected from the nylon, LCP (Liquid Crystal Polymer), PP(Polypropylene), epoxy resin, and the like. One skilled in the art willunderstand that the material of the molding material 14 described aboveare exemplary only and not intended to be limiting the scope of thepresent invention.

The first mould 211 and the second mould 212 can be two moulds whichhave a relative movement. For example, one of the two moulds is arrangedstationary and the other of the two moulds is arranged in moveablemanner. Alternatively, both of the two mounds are arranged in moveablemanner, the present invention in this aspect described above isexemplary only and not intended to be limiting the present invention. Inthe embodiment of the present invention, the first mould 211 isspecifically embodied as a stationary upper mould and the second mould212 is specifically embodied as a moveable lower mould with respect tothe upper mould. The stationary upper mould 211 and the moveable lowermould 212 are provided coaxially so that the lower mould 212 can beoperated to move axially towards or away from the upper mould 211. Forexample, the moveable lower mould 212 can slide upwardly along aplurality of positioning shafts to the closed-mould position to form theclosed molding chamber 213 between the stationary upper mould 211 andthe moveable lower mould 212.

The second mould 212 which is embodied as the lower mould has a circuitboard positioning groove 2121. The circuit board positioning groove 2121has a groove shape or is formed by a positioning post for mounting andholding the circuit board 11 in position inside the closed moldingchamber 213. The light window forming block 214 and the base formingguide groove 215 can be formed in the first mould 211 which is embodiedas the upper mould. When the first mould 211 and the second mould 212are in the closed-mould position, the molding chamber 213 is definedtherebetween, and the liquid molding material 14 is filled into the baseforming guide groove 215 at a top side of the circuit board 11, so thatthe molded base 12 can be formed on the circuit board 11 and thenon-photosensitive area portion 1312 on the top side of thephotosensitive element 13.

It is understandable that, alternatively, the circuit board positioninggroove 2121 can also be provided in the first mould 211 which isembodied as the upper mould adapted for mounting and holding the circuitboard 11 in position. The light window forming block 214 and the baseforming guide groove 215 can be formed in the second mould 212. When thefirst mould 211 and the second mould 212 are in the closed-mouldposition, the molding chamber 213 is formed therebetween. The circuitboard 11 in the upper mound is arranged toward an obverse side and theliquid molding material 14 is filled into the base forming guide groove215 which is on a bottom side of the inverted circuit board 11, so thatthe molded base 12 is formed on the bottom side of the inverted circuitboard 11.

More specifically, when the first mould 211 and the second mould 212 arein the closed-mould position and perform the molding step, the lightwindow forming block 214 is overlapped on the circuit board 11, so thatthe light window 122 of the molded base 12 is formed corresponding tothe position of the light window forming block 214.

It is understandable that, a molding surface of the first mould 211forming the base forming guide groove 215 can be configured as a flatsurface and in the same plane. Thus, when the molded base 12 is formedafter solidification, a top surface of the molded base 12 is able to bemade absolutely flat, so that the molded base 12 provides a flatmounting condition for the lens 30 or other supporting components of thelens 30, thereby reducing a tilt error of the assembled camera module100.

It is worth mentioning that the base forming guide groove 215 and thelight window forming block 214 can be provided on the first mould 211 ina replaceable manner. In other words, the first mould 211 furthercomprises a detachable molding configuration, which is formed with thebase forming guide groove 215 and the light window forming block 214.Thus, different shapes and sizes of the base forming guide groove 215and the light window forming block 214 are designed according todifferent shapes and sizes of the molded circuit board assembly 10 suchas with different diameters and thickness of the molded base. Thus, byreplacing different molding configurations, the manufacturing equipmentis adapted to be applied on different specification requirements fordifferent molded circuit board assemblies 10. It is understandable thatthe second mould 212 can correspondingly comprise a detachable fixedblock to provide different shapes and sizes of the circuit boardpositioning groove 2121 so as to facilitate the replacement of differentshapes and sizes of the circuit board 11.

It is understandable that the molding material 14 is a thermal fusiblematerial such as a thermoplastic material. A melting and heating deviceturns the solid-state heat fusible material into the liquid moldingmaterial 14 by heating. During the molding process, the hot and meltedmolding material 14 is solidified by a cooling process. The moldingmaterial 14 can also be a thermosetting material. The thermosettingmaterial is heated and melted to turn into the liquid molding material14 by the melting and heating device. During the molding process, thethermosetting molding material 14 is solidified by a further heatingprocess, and the molding material 14 cannot be melted again aftersolidification, thereby forming the molded base 12.

It is understandable that in the molding process of the presentinvention, the molding material 14 can be in form of block, pellet, orpowder, which becomes liquid in the molding mould 210 after heating andis then cured to form the molded base 12 after solidification.

It is understandable that, in the embodiment, a molding process of thecircuit board 11 is illustrated, wherein, in the application of themanufacturing equipment 200, a plurality of separated circuit boards 11can be molded at the same time. Alternatively, a joint board arrayoperation mentioned in the following embodiment is also adapted.

Referring to FIG. 8A to FIG. 9 of the drawings, a manufacturing processof the molded circuit board assembly 10 of the camera module 100according to the preferred embodiment of the present invention isillustrated. As shown in FIG. 8A of the drawings, the molding mould 210is in the closed-mould position, the circuit board 11 which is preparedto be molded and the solid molding material 14 are placed in positiontherein. The solid molding material 14 is heated and melted into aliquid state or into a semi-solid state, which is pressured to fill intothe base forming guide groove 215 until reaching around the light windowforming block 214.

As shown in FIG. 8B of the drawings, when the base forming guide groove215 is filled with the liquid molding material 14, the liquid moldingmaterial 14 is solidified to form the molded base 12 which is integrallyformed on the circuit board 11. Take the molding material 14 beingembodied as a thermosetting material as an example, in the embodiment ofthe present invention, the heated and melted liquid molding material 14is solidified after being heated.

As shown in FIG. 9 of the drawings, after the molding material 14 iscured to form the molded base 12, a demoulding process is performed. Inthe demoulding process, the mould fixing unit 230 moves the first mould211 and the second mould 212 away from each other to the opened-mouldposition, thus the light window forming block 214 is departed from themolded base 12 and the light window 122 is formed in the molded base 12.

In the prior art as shown in FIG. 1B of the drawings, it is generally anon-practical concept for mass production because a bottom of thesquare-shaped molding block 4 has a sharp edge. During the demouldingprocess, the sharp edge produces a large friction with the inner surfaceof an encapsulation portion 1 that results in damaging the inner surfaceof the encapsulation portion 1. However, according to the presentinvention, the light window forming block 214 of the present inventionis configured that the molded base 12 will not be damaged duringdemoulding process.

More specifically, according to the above embodiment of the presentinvention, as shown in FIG. 8A to FIG. 9 of the drawings, the lightwindow forming block 214 has a trapezoid cross section. In other words,the light window forming block 214 has a pyramidal cross section with atransversal size gradually reduced along a longitudinal axis, and thelight window forming block 214 is a solid body or is constructed as ahollow body covered on the circuit board 11 or a circuit board 11electrically connected with the photosensitive element 13 in order tofacilitate the subsequent molding process.

In the embodiment of the present invention, the light window formingblock 214 is a solid structure. The light window forming block 214 has apress-fit surface 2141 on its bottom side and a peripheral moldingsurface linearly extended along the circumferential direction to form abase inner side surface forming surface 2142. The included angle betweenthe base inner side surface forming surface 2142 and a vertical(longitudinal) line is defined as a first included angle, which is anacute angle, while the conventional included angle as shown in FIGS. 1Band 1C is 0 degree. More specifically, the angular range of the firstincluded angle is preferably 10° to 80°, and more preferably 30° to 55°.

Accordingly, as shown in FIG. 5 and FIG. 6 of the drawings, the annularmolding body 121 of the molded base 12 of the molded circuit boardassembly 10 of the camera module 100 has a linearly extended inner sidesurface 124. A first inclination angle α is defined between the innerside surface 124 and a longitudinal line direction of the optical axis Yof the photosensitive element 13 of the molded circuit board assembly10, wherein the first inclination angle α is the same as the firstincluded angle correspondingly, which angular range is preferably 10° to80°, and more preferably 30° to 55°.

As shown in FIG. 8A of the drawings, the light window forming block 214has a trapezoidal cross section that gradually reduces its transversesize from the bottom to the top thereof. Correspondingly, the lightwindow 122 formed in the molded base 12 also has a trapezoidal crosssection that gradually increases its transverse size from the bottom tothe top thereof. The angular range of the first inclination angle α ispreferably to 10° to 80°, more preferably 30° to 55°, so as tofacilitate the demoulding process without damaging the lead wires 15. Inaddition, the light window 122 of the molded base 12 having atrapezoidal cross section can save molding material while ensuringdesired strength of the molded base 12.

It is worth mentioning that it is also possible to effectively avoid thestray light by selecting the right angular range of the firstinclination angle α according to the present invention. As shown in FIG.1E of the drawings according to the conventional molded and packagedcamera module, the incident light through a lens has a portion reachinga photosensitive chip for light-receiving process while other portion ofthe incident light, such as the light beam as shown in FIG. 1E, isprojected onto the longitudinal inner walls of the encapsulation portion1, which is easily reflected by the inner wall of the encapsulationportion 1 to reach the photosensitive chip 3 for photoelectricconversion process, thereby adversely affecting imaging quality of theconventional camera module with reflected stray light. However,according to the preferred embodiment of the present invention, as shownin FIG. 7 of the drawings, incident light through the lens 30 has amajor portion reaches the photosensitive element 13. Other portion ofthe incident light, such as light beam in the same direction and angleof the light beam in FIG. 1E, is projected onto the inner side surface124 of the molded base 12 and is reflected out by the inner side surface124 of the molded base 12 to the other side of the inner side surface124, wherein the reflected light is distant from the photosensitiveelement 13 without reaching the photosensitive element 13 to prevent anyphotoelectric conversion process therefor by the photosensitive element13, thereby reducing the influence of reflected stray light on theimaging quality of the camera module 100.

It is appreciated that the material surface of the molded base 12according to the preferred embodiment of the present invention has areflectivity of less than 5% in the wavelength range of 435-660 nm. Inother words, most of the incident light projecting on the surface of themolded base 12 cannot be reflected to form the interference stray lightreaching the photosensitive element 13, thereby remarkably reducing theinfluence of reflected stray light according to the present invention.

In addition, as shown in FIGS. 4 to 7 the drawings, the molded base 12has the inner side surface 124 extended along an inner circumferentialdirection thereof, an outer side surface 125 extended along an outercircumferential direction thereof, and an annular top side surface 126.The inner side surface 124 is extended outwardly and integrally from thebase board 111 of the circuit board 11. The outer side surface 125 isalso extended inwardly and integrally from the base board 111 of thecircuit board 11.

As shown in FIGS. 8A and 8B, the first mould 211 of the molding mould210 is further provided with one or more dividing blocks 216 for formingthe outer side surface 125 of the molded base 12 during the moldingprocess. More specifically, the dividing blocks 216 has a base outerside surface forming surface 2161 to determine a position and shape ofthe outer side surface 125 of the molded base 12 which is formed by themolding material 14 after solidification in the molding process. Atop-side molding surface 217 is formed between the dividing blocks 216and the light window forming block 214 to determine a position and shapeof the top side surface 126 of the molded base 12 which is formed by themolding material 14 after solidification in the molding process.

In the prior art, as shown in FIGS. 1A to 1E, the outer surface of theencapsulation portion 1 is perpendicular to the circuit board. In otherwords, a base outer surface molding surface of a partition block of theconventional mould is vertically oriented so that during the demouldingprocess, the base outer surface molding surface of the partition blockof the conventional mould is always rubbed against the encapsulationportion 1, so that the demoulding process is inconvenient to operate,especially in mass production, and the outer side surface of theencapsulation portion 1 is easily damaged that results in great amountof defective products.

However, according to the preferred embodiment of the present invention,the base outer side surface forming surface 2161 further has a secondincluded angle with respect to a longitudinal direction.Correspondingly, a second inclination angle γ is defined between theouter side surface 125 of the molded base 12 and the optical axis Ydirection, having the same angle of the second included angle, as shownin FIG. 6. In other words, when the molded base 12 is horizontallyarranged, the outer side surface 125 of the molded base 12 has thesecond inclination angle γ with respect to the vertical (longitudinal)line. For ease of demoulding, the second inclination angle γ is an acuteangle and the second inclination angle γ cannot be too large as the topside surface 126 of the molded base 12 is needed to have a sufficientsize to facilitate the subsequent installment of the lens 30 or the lensactuator 40. In other words, if the second inclination angle γ is toolarge and the inner side surface 124 and the outer side surface 125 ofthe molded base 12 are both inclinedly extended upwardly, the size ofthe top side surface 126 will be too small to securely install the lens30 or the lens actuator 40. In addition, in this embodiment, the bottomportion of the lens actuator 40 has a mating surface which fits to thetop side surface 126 of the molded base 12. When the top side surface126 of the molded base 12 has a dimension, for example, less than themating surface, it is inconvenient for the alignment of the lensactuator 40 that, when the lens actuator 40 is mounted on the top sidesurface 126 of the molded base 12, the lens actuator 40 may be shakenand not stable, and the lens actuator 40 is unable to prevent fromcrashing and anti-collision. Accordingly, according to a preferredembodiment of the present invention, the numerical maximum of the firstinclination angle α is preferably not more than 30° and the numericalmaximum of the second inclination angle γ is preferably not more than45°. In addition, with a numerical minimum of the second inclinationangle α, the demoulding operation of the molding process can befacilitated and the manufacturing of the molding mould 210 can also befacilitated. Therefore, the numerical minimum of the first inclinationangle α and the second inclination angle γ is preferably not smallerthan 3°. Therefore, the angular range of the first inclination angle αof the present invention is 3° to 30°, more preferably 3° to 15°. Theangular range of the second inclination angle γ of the present inventionis 3° to 45°, more preferably 3° to 15°. It is worth mentioning that, asshown in FIG. 5 of the drawings, a press-fit distance W is formed on anouter edge of the base board 111 of the circuit board 11 and the outerside surface 125 of the formed molded base 12, so that it facilitatesthe demoulding and to press-fit the base board 111 of the circuit board11. In other words, in the molding process, the dividing blocks 216 aresuitable to press-fit on the region of the base board 111 of the circuitboard 11, the press-fit distance W is a distance from a position whichis the outer side surface 125 of the molded base 12 extended from thebase board 111 of the circuit board 11 to the outer edge of the baseboard 111 of the circuit board 11. For example, the press-fit distance Whas a range of 0.1˜10 mm, preferably 0.1˜0.6 mm. In a specific example,the press-fit distance W is 0.5 mm.

It is understandable that, because of the first inclination angle α andthe second inclination angle γ and, in other words, as the inner sidesurface 124 and the outer side surface 125 of the molded base 12 havinginclinations, during the demoulding process, the friction between themolded base 12 and the first mould 211 is reduced and the molded base 12is much easier to be drafted out, such that the molded base 12 has abetter molding state. More specifically, when the molded base 12 iscured and formed in the molding process and, in the demoulding process,the light window forming block 214 and the dividing blocks 216 begin tomove vertically and upwardly with respect to the molded base 12, thebase inner side surface forming surface 2142 of the light window formingblock 214 and the base outer side surface forming surface 2161 of thedividing blocks 216 are respectively separated with the inner sidesurface 124 of the molded base 12 and the outer side surface 125 of themolded base 12, so that the base inner side surface forming surface 2142of the light window forming block 214 and the base outer side surfaceforming surface 2161 of the dividing blocks 216 are not respectively infriction contact with the inner side surface 124 of the molded base 12and the outer side surface 125 of the molded base 12, thereby avoidingdamages to the inner side surface 124 and the outer side surface 125 ofthe molded base 12 and at the same time facilitating a smooth draftingof the molded base 12.

At the same time, the shape of the base forming guide groove 215 formedby the molding mould 210 is at an appropriate gradient without aright-angled corner, such that the fluid form molding material 14entering into the base forming guide groove 215 has a better liquidity.Furthermore, the first inclination angle α and the second inclinationangle γ are acute angles, unlike the prior art right-angleconfiguration, so that the angle between the top surface 131 of thephotosensitive element 13 of the molded circuit board assembly 10 andthe inner side surface 124 of the molded base 12 becomes a relativelyrounded obtuse angle. The light window forming block 214 and thedividing blocks 216 do not form sharp edges and corners to scratch theinner side surface 124 and the outer side surface 125 of the molded base12. Furthermore, the angular range of the first inclination angle αenables the molded base 12 to prevent the stray light from adverselyaffecting the image quality of the camera module 100.

Referring to FIG. 10 to FIG. 21 of the drawings, the molded circuitboard assembly 10 of the camera module 100 and the manufacturing processthereof according to a second preferred embodiment of the presentinvention are illustrated. According to the second preferred embodimentof the present invention, an integral piece of molded circuit boardassembly array 1000 can be manufactured by a joint board arrayoperation, and the molded circuit board assembly 10 is obtained bycutting the integral piece of molded circuit board assembly array 1000.

Accordingly, more specifically, the molding chamber 213 is formed whenthe molding mould 210 is in the closed-mould position, and a pluralityof the light window forming blocks 214 and one or more integral basearray forming guide grooves 2150 are provided. In other words, aplurality of the base forming guide grooves 215 communicated with eachother is provided and these base forming guide grooves 215 form anoverall guiding groove.

Before the molding process, an integral piece of circuit board array1100 is manufactured in advance. The integral piece of circuit boardarray 1100 comprises a plurality of circuit boards 11 integrallyconnected with each other.

When the integral piece of circuit board array 1100 is put in themolding chamber 213 and the molding mould 210 is in the closed-mouldposition, the solid molding material 14 is heated to melt and ispressured to enter the integral base array forming guide grooves 2150,thereby the liquid molding material 14 is filled around each of thelight window forming blocks 214. Finally, during a solidifying process,the liquid molding material 14 in each of the integral base arrayforming guide grooves 2150 is solidified and hardened to form the moldedbase 12 which is integrally molded on each of the circuit boards 11 ofthe integral piece of circuit board array 1100. These molded bases 12form an overall integral piece of molded base array 1200.

The molding surface of the first mould 211 contacted with the circuitboard 11 is also provided with an elastic film layer 219, as shown inFIG. 16, so that the molding surface of the first mould 211 is firmlycontacted with the circuit board 11 that is convenient for demoulding.

It is worth mentioning that when each of the separated molded circuitboard assemblies 10 is manufactured by cutting the integral piece ofmolded circuit board assembly array 1000 to manufacture the auto-focuscamera module, the molding mould 210 further comprises a plurality oflens actuator pin groove forming blocks 218. Each of the lens actuatorpin groove forming blocks 218 is extended in the respective integralbase array forming guide groove 2150, so that in the molding process,the liquid molding material 14 is not filled at the positionscorresponding to the lens actuator pin groove forming blocks 218, andthus after a solidifying step, a plurality of the light windows 122 anda plurality of the lens actuator pin grooves 127 are formed in theintegral piece of molded base array 1200 of the integral piece of moldedcircuit board assembly array 1000, wherein the molded base 12 of each ofthe separated molded circuit board assembly 10 manufactured through acutting step is provided with the lens actuator pin grooves 127.Therefore, during the camera module 100 is manufactured, a lens actuatorpin 41 of the lens actuator 40 is electrically connected to the circuitboard 11 of the molded circuit board assembly 10 by welding or byattaching through a conducting resin.

It is understandable that, in comparison with the manufacturing processof the separated molded circuit board assembly 10 in the above firstembodiment of the present invention, in the joint board array operation,two adjacent base forming guide grooves 215 forming two molded bases 12are jointed together while the light window forming blocks 214 arespaced with each other, so that the molding material 14 eventually formsthe integral piece of molded base array 1200 with an overallconfiguration.

In the step of manufacturing the separated molded circuit board assembly10, the integral piece of molded circuit board assembly array 1000 iscut into a plurality of molded circuit board assemblies 10 tomanufacture a plurality of camera modules respectively. Alternatively,two or more molded circuit board assemblies 10 which are combined witheach other from the integral piece of molded circuit board assemblyarray 1000 can be separated and manufactured by cutting so as tomanufacture a split type camera module array. In other words, each ofthe camera modules of the camera module array has an individual moldedcircuit board assembly 10, wherein two or more molded circuit boardassemblies 10 are electrically connected to a controlling mainboard ofthe same electric device. Thus, the camera module array manufactured bytwo or more molded circuit board assemblies 10 transmits the imagescaptured by the camera modules to the controlling mainboard for graphicinformation processing.

As shown in FIG. 22 of the drawings, the molding process of the jointboard array operation also can be used to make a molded circuit boardassembly 10 with two or more light windows 122, wherein the moldedcircuit board assembly 10 can be used to make a camera module arraysharing a same base. In other words, taking the molded circuit boardassembly 10 of an array of double camera modules as an example, for eachof the circuit boards 11 of the integral piece of circuit board array1100 in the molding process, one base board 111 is correspondinglyprovided with two light window forming blocks 214. The light windowforming blocks 214 are spaced with each other and two base forming guidegrooves communicated with each other are disposed around the lightwindow forming blocks 214. Therefore, after the molding process, thecircuit board 11 together form an integral molded base which shares onebase board 111 and has two light windows 122, wherein two photosensitiveelements 13 and two lens 30 are then correspondingly mounted thereonrespectively. Furthermore, the base board 111 of the circuit board 11can be connected to a controlling board of an electric board, and thuscamera module array manufactured in this embodiment transmits the imagescaptured by the camera modules to the controlling mainboard for graphicinformation processing.

It is worth mentioning that a press-fit distance W is formed on an outeredge of the base board 111 of the circuit board 11 and the outer sidesurface 125 of the formed molded base 12, so that it facilitatesdemoulding and press-fitting the base board 111 of the circuit board 11.The press-fit distance W has a range of 0.1˜10 mm, preferably 0.1˜0.6mm. In a specific example, the press-fit distance W is 0.5 mm.

As shown in FIG. 23 of the drawings, according to an alternative mode ofthe above preferred embodiments of the present invention, the moldedbase 12 is extended integrally and upwardly to form a lens mountingportion 16. The lens mounting portion 16 has a through hole 161 formounting one or more lenses 30. It is worth mentioning that one of thelight window forming block 214 and the dividing blocks 216 may have anarc-shaped chamfering transition in each of the corner or edgepositions, so that according to the above-described embodiment, both thelight window forming block 214 and the dividing blocks 216 areconfigured to have arc-shaped chamfered transitions so as to form anarc-shaped corner edge between the lens mounting portion 16 and themolded base 12 as well as an arc-shaped inner bottom edge of the moldedbase 12, as shown in FIG. 23, to further prevent damage to the formedmolded base 12 during demoulding.

As shown in FIG. 24 of the drawings, according to another alternativemode of the above preferred embodiments of the present invention, beforethe molding process, the photosensitive element 13 is connected to thecircuit board 11 by the lead wires 15 and an annular blocking element 17is provided on the circuit board 11 and positioned around thephotosensitive element 13. The blocking element 17 is mounted or coatedon the circuit board 11. The blocking element 17 is elastic and has aheight higher than the highest point of the lead wires 15 electricallyconnected between the circuit board 11 and the photosensitive element13, so that in the molding process, the light window forming block 214is press-fit onto the blocking element 17 to prevent the light windowforming block 214 from direct contacting with and damaging the circuitboard 11, the lead wires 15 and the photosensitive element 13. In someembodiments, the blocking element 17 has a square ring-shape and isimplemented as an adhesive step form positioned surrounding thephotosensitive element 13 on the circuit board 11, as shown in FIG. 24,and the molded base 12 is formed adjacent to the blocking element 17after the molding process such that the blocking element 17 not onlyprevents any molding material flowing to the photosensitive element 13during the molding process but also forms an intermediate elementbetween the molded base 12 and the photosensitive element 13 on thecircuit board 11.

Referring to FIG. 11 to FIG. 15 of the drawings, the camera module 100,according to the second preferred embodiment of the present invention,comprises a molded circuit board assembly 10. The molded circuit boardassembly 10 comprises the circuit board 11 and the molded base 12. Thecamera module 100 further comprises a lens 30. The molded base 12comprises the annular molding body 121 and has the light window 122formed in a middle thereof to provide a light path for the lens 30 andthe photosensitive element 13. The photosensitive element 13 isoperatively connected to the circuit board 11. For example, thephotosensitive element 13 is electrically connected to the circuit board11 by leading wires by a COB process, and the photosensitive element 13is positioned on a top side of the circuit board 11. The photosensitiveelement 13 and the lens 30 are respectively assembled on two sides ofthe molded base 12 and are optically aligned in such a manner that thelight passing through the lens 30 is able to reach the photosensitiveelement 13 via the light window 122, so that the camera module 100 isable to produce an optical image through a photoelectric conversionprocess. As shown in FIG. 25 of the drawings, the camera module 100applied on a device body 310 of an intelligent electronic device 300 isillustrated. For example, the camera module 100 is applied on a mobilephone and is arranged along a thickness direction of the mobile phone.In addition, one or more camera module 100 can be assembled in the frontand the back of the mobile phone.

The difference between the first embodiment of the present invention andthe second preferred embodiment is that a top groove 123 is formed on atop side of the molded base 12 for mounting the optical filter 50, asshown in FIGS. 14 and 24. Alternatively, as shown in FIG. 12 of thedrawings, the top groove 123 may also be used to support an additionaloptical filter holder 60 for mounting the optical filter 50.

Accordingly, the circuit board 11 comprises the base board 111 and aplurality of electronic components 112. The plurality of electroniccomponents 112 is formed on the base board 111 using a technology suchas the surface mount technology. The molded base 12 is molded and coatedon the electronic components 112.

The molded base 12 has an inner side surface 124, an outer side surface125 and a top side surface 126, as shown in FIGS. 14 and 24. In otherwords, the inner side surface 124 is formed along the innercircumferential direction of the molded base 12 and the outer sidesurface 125 is formed along the outer circumferential direction of themolded base 12 while the annular top side surface 126 defines a shape ofthe annular molding body 121.

In this embodiment, the cross section of the light window 12 ismulti-step-shaped such as two-step-shaped. The inner side surface 124 ofthe molded base 12 is not a linearly extended flat inner surface, but acurved extending inner surface. More specifically, as shown in FIGS. 14to 15, 24 and 26 to 29, the inner side surface 124 has a first portioninner side surface 1241, a second portion inner side surface 1242 and athird portion inner side surface 1243 integrally extended. As shown inthe drawings, taking the arrangement which is in a longitudinaldirection of the camera module 100 as an example, the first portioninner side surface 1241 is integrally and inclinedly extended from a topsurface 1111 of the base board 111 of the circuit board 11, the secondportion inner side surface 1242 is basically extended from the firstportion inner side surface 1241 along a horizontal (transversal)direction, the third portion inner side surface 1243 is integrally andinclinedly extended from the second portion inner side surface 1242. Theannular molding body 121 of the molded base 12 is correspondingly formedwith a base station portion 121 a on a bottom side, and a step portion121 b which is integrally extended from the base station portion 121 a.The step portion 121 b forms an overall annular step, or the stepportion 121 b is a multi-section type such as three-section type and oneside of the molded base 12 may not have a step protrusion. The stepportion 121 b has a relative larger width than the base station portion121 a. The inner surface of the base station portion 121 a is the firstportion inner side surface 1241 of the inner side surface 124 of themolded base 12, the inner surface of the stair portion 121 b is thethird portion inner side surface 1243 of the inner side surface 124 ofthe molded base 12 and the top surface of the stair portion 121 b is thetop side surface 126 of the molded base 12.

It is understandable that the first portion inner side surface 1241 anda longitudinal line direction of the optical axis Y of the camera module100 define the first inclination angle α therebetween, as shown in FIGS.14-15 and 26-29. In other words, when the camera module 100 is alignedalong the vertical (longitudinal) direction, the first portion innerside surface 1241 and the vertical (longitudinal) line define the firstinclination angle α therebetween. The extending direction of the secondportion inner side surface 1242 is substantially perpendicular to alongitudinal line direction of the optical axis Y of the camera module100. The third portion inner side surface 1243 and the longitudinal linedirection of the optical axis Y of the camera module 100 define a thirdinclination angle β therebetween. That is, when the camera module 100 isaligned in the vertical (longitudinal) direction, the third portioninner side surface 1243 and the vertical (longitudinal) line define thethird inclination angle β therebetween.

The outer side surface 125 of the molded base 12 which is extended fromthe top surface 1111 of the base board 111 of the circuit board 11comprises one or more outer peripheral surfaces 1251, as shown in FIG.15. In the second preferred embodiment of the present invention, as theintegrally connected integral piece of molded circuit board assemblyarray 1000 is manufactured and is cut into independent molded circuitboard assemblies 10, some outer peripheral surfaces 1251 of the outerside surface 125 of the molded base 12 of the molded circuit boardassembly 10 are formed by cutting, so that the outer peripheral surfaces1251 can be vertical flat surfaces. While at least one outer peripheralsurfaces 1251 is defined by the base outer side surface forming surface2161 of the dividing blocks 216 of the molding mould 210 in the moldingprocess. As shown in FIG. 21 of the drawings, the front outer peripheralsurfaces 1251 of the molded circuit board assembly 10 obtained bycutting is formed by the base outer side surface forming surface 2161 ofthe dividing blocks 216 of the molding mould 210. The front outerperipheral surfaces 1251 and the longitudinal line direction of theoptical axis Y of the camera module 100 define a second inclinationangle γ therebetween. In other words, when the camera module 100 isaligned in the vertical (longitudinal) direction, the front outerperipheral surfaces 1251 and the vertical (longitudinal) line define thesecond inclination angle γ therebetween. In addition, the molded base 12is also formed with one or more lens actuator pin grooves 127. Each ofthe lens actuator pin grooves 127 has a pin groove wall 1271. The pingroove wall 1271 and the longitudinal line direction of the optical axisY of the camera module 100 define a fourth inclination angle δtherebetween, as shown in FIG. 18. In other words, when the cameramodule 100 is aligned in the vertical (longitudinal) direction, the pingroove wall 1271 and the vertical (longitudinal) line define the fourthinclination angle δ therebetween.

According to the embodiments of the present invention, as shown in FIGS.14-15 and 26-29, the angular range of the first inclination angle α is3°˜30°, while in other embodiments, the angular range of the firstinclination angle α is 3° to 15°, 15°˜20° or 20°˜30°. The angular rangeof the second angle γ is 3°˜45°, while in other embodiments, the angularrange of the second angle γ is 3°˜15°, 15°˜30° or 30°˜45°. The angularrange of the third angle β is 3°˜30°, while in other embodiments, theangular range of the third angle β is 3°˜15°, 15°˜20° or 20°˜30°. Theangular range of the fourth angle δ is 3°˜45°, while in otherembodiments, the angular range of the third angle β is 3°˜15°, 15°˜30°or 30°˜45°.

The light window forming block 214 and the dividing blocks 216 areformed in a frustum-pyramidal shape, and edges and corners of the lightwindow forming block 214 and the dividing blocks 216 are linearlytransitioned or smoothly transitioned in an arc shape. However, theextending angles ranges of the surfaces are substantially within theabove-mentioned specific range.

Correspondingly, the first mould 211 of the molding mould 210 isconfigured with an overall molding surface to form the molded base 12with the above structure. More specifically, as shown in FIGS. 16 to 19of the drawings, the light window forming block 214 comprises a presshead portion 214 a in a bottom side and a groove forming portion 214 bon a top side. The press head portion 214 a and the groove formingportion 214 b together are used to form the light window 122 of themolded base 12. The groove forming portion 214 b is used to form the topgroove 123 on the top side of the molded base 12.

It is understandable that the light window forming block 214 comprises apress-fit surface 2141 on a bottom side and a base inner side surfaceforming surface 2142 along an outer circumferential direction.Furthermore, in this embodiment, the base inner side surface formingsurface 2142 of the light window forming block 214 comprises a firstportion forming surface 21421, a second portion forming surface 21422and a third portion forming surface 21423 which are integrally extended.The first portion forming surface 21421, the second portion formingsurface 21422 and the third portion forming surface 21423 arerespectively and correspondingly used for forming the first portioninner side surface 1241, the second portion inner side surface 1242 andthe third portion inner side surface 1243 which are integrally extendedin an inner side of the molded base 12.

According to the embodiments of the present invention, as shown in thedrawings, the camera module 100 is vertically aligned, the longitudinaldirection of the optical axis Y of the photosensitive element 13 of thecamera module 100 is parallel to the vertical (longitudinal) line.Correspondingly, the first portion forming surface 21421 and thevertical (longitudinal) line define the first inclination angle α in therange of 3°˜30°. The third portion forming surface 21423 and thevertical (longitudinal) line define the third inclination angle β in therange of 3°˜30°.

Correspondingly, the bottom side surface of the press head portion 214 aforms the press-fit surface 2141 of the light window forming block 214.The outer side surface of the press head portion 214 a forms the firstportion forming surface 21421 of the light window forming block 214. Thebottom side surface of the groove forming portion 214 b forms the secondportion forming surface 21422 of the light window forming block 214. Theouter side surface of the groove forming portion 214 b forms the thirdportion forming surface 21423 of the base forming guide groove 215. Thepress head portion 214 a and the groove forming portion 214 b areconfigured to be a frustum-pyramidal shape. The press head portion 214 aand the groove forming portion 214 b both have trapezoid cross sections,thereby preventing damages to the elastic film layer 219. Morespecifically, taking the groove forming portion 214 b as an example, themolding block in the prior art has sharp edges and corners, and duringthe demoulding process, the film layer 219 is easy to be pierced at theposition where the second portion forming surface 21422 is connected tothe third portion forming surface 21423. While the second portionforming surface 21422 on the bottom side of the groove forming portion214 b and the third portion forming surface 21423 on the outerperipheral side of the groove forming portion 214 b have an obtuse angletherebetween so as to provide convenience for the demoulding of thegroove forming portion 214 b.

In correspondence to that the outer side surface 125 of the moldedcircuit board assembly 10 has at least one outer peripheral surface1251, each of the dividing blocks 216 has a base outer side surfaceforming surface 2161. The base outer side surface forming surface 2161and the vertical line define the second inclination angle γtherebetween, ranging 3°˜45°.

The molding mould 210 is further provided with a plurality of the lensactuator pin groove forming blocks 218 each having a pin groove sidesurface forming surface 2181. The pin groove side surface formingsurface 2181 and the vertical (longitudinal) line define the fourthinclination angle δ therebetween, ranging 3°˜30°.

Correspondingly, the above structure of the first mould 211 of themolding mould 210 and the molded base 12 have the following advantages.

Firstly, it is convenient for drafting out the dividing blocks 216 andthe light window forming block 214 of the first mould 211 duringdemoulding. In other words, as the first inclination angle α, the secondinclination angle γ, the third inclination angle β, and the fourthinclination angle δ which are acute angles are provided to facilitatedemoulding, the light window forming block 214 and the dividing blocks216 have reduced frictions with the molded base 12 and the molded base12 is easy to be detached to obtain a better molded state. As shown inFIG. 19 of the drawings, as along as the light window forming block 214and the dividing blocks 216 are departed from the molded base 12 andhave upward and downward relative displacements, friction is avoidedbetween the light window forming block 214 and the dividing blocks 216with the molded base 12. In other words, the first portion formingsurface 21421, the second portion forming surface 21422 and the thirdportion forming surface 21423 of the light window forming block 214 arerespectively separated with the first portion inner side surface 1241,the second portion inner side surface 1242 and the third portion innerside surface 1243 of the molded base 12. The base outer side surfaceforming surface 2161 of the dividing blocks 216 and the outer sidesurface 125 of the molded base 12 are separated, and thus the lightwindow forming block 214 and the dividing blocks 216 are capable ofbeing easily drafted from the molded base 12, thereby reducing theadverse influence to the molding condition and effect of the molded base12.

Secondly, the shape of the integral base array forming guide groove 2150formed by the molding mould 210 has no right-angled corners and has anappropriate gradient such that the liquid molding material 14 has abetter liquidity entering the base forming guide groove 215. In otherwords, as the molding material 14 is generally in a liquid state duringthe molding process and is needed to flow in the molding chamber 213,the size of flowing area influences the filling effect of the moldingmaterial 14. The structure of the integral base array forming guidegroove 2150 according to the embodiment of the present inventionincreases the flowing rate of the molding material 14, so that themolded base 12 is molded in a shorter time and is benefit for themolding of the molded base 12.

Thirdly, the first inclination angle α, the second inclination angle γ,the third inclination angle β, and the fourth inclination angle δ areacute angles, other than the right angle configuration in the prior art.The light window forming block 214 and the dividing blocks 216 do notform any sharp edge and corner that would damage the inner side surface124 and the outer side surface 125 of the molded base 12.

Fourthly, as the first inclination angle α, the second inclination angleγ, the third inclination angle β, and the fourth inclination angle δ areacute angles, the inner side surface 124 of the molded base 12, at leastone portion of the outer side surface 125 and the pin groove wall 1271are in slant shape, so that the size of the molded base 12 is relativelysmaller and the overall molding material 14 needed to be filled isdecreased.

Fifthly, the acute angle range of the first inclination angle α and thethird inclination angle β are capable of avoiding the stray lightaffecting the imaging quality of the camera module 100. Morespecifically, it reduces the possibility of stray light reaching thephotosensitive element 13. That is, when the incident stray light in thecamera module 100 is projected on the curved extending inner sidesurface 124 of the molded base 12, the aslant first portion inner sidesurface 1241, the third portion inner side surface 1243 and the secondportion inner side surface 1242 which is extended along the horizontal(transversal) direction reflect the incident stray light away from thephotosensitive element 13, preventing the incident stray light fromeasily reaching the photosensitive element 13 to affect the imagequality of the camera module 100.

In addition, the ranges of the first inclination angle α, the secondinclination angle γ, and the third inclination angle β enable the moldedbase 12 having a better supporting function. For example, the top sidesurface 126 has an enough size facilitating the mounting of the lens 30or the lens actuator 40 thereto, and it is ensured that the secondportion inner side surface 1242 has a sufficient size to facilitatemounting of the optical filter 50 or the optical filter holder 60. Inother words, the first inclination angle α, the second inclination angleγ, and the third inclination angle β are not preferred to be too largeto avoid the length of the top side surface 126 being too small in orderto provide a secure mounting position for the lens 30 or the lensactuator 40.

Referring to FIG. 26 to FIG. 29 of the drawings, four examples of therange of the first inclination angle α, the second inclination angle γ,and the third inclination angle β according to the second preferredembodiment of the present invention are illustrated. In the fourexamples, the first portion inner side surface 1241 of the molded base12 and the vertical (longitudinal) line define the first inclinationangle α, at least one outer peripheral surfaces 1251 of the outer sidesurface 125 along the outer peripheral direction of the molded base 12and the vertical (longitudinal) line define the second inclination angleγ, and the third portion inner side surface 1243 of the inner sidesurface 124 of the molded base 12 and the vertical (longitudinal) linedefine the third inclination angle β. L1 denotes a distance between theedge of photosensitive element 13 and the connecting position of thefirst portion inner side surface 1241 of the molded base 12 and thecircuit board 11. L2 denotes a distance between the connecting positionof the first portion inner side surface 1241 and the circuit board andthe connecting position of the second portion inner side surface 1242and the third portion inner side surface 1243. L3 denotes a distancebetween the connecting position of the second portion inner side surface1242 and the third portion inner side surface 1243 and the connectingposition of the outer side surface 125 of the molded base 12 and thecircuit board 11. L4 denotes a length of the top side surface 126 of themolded base 12. The distance from the second portion inner side surface1242 to the top surface of the base board 111 of the circuit board 11 isH1. The distance from the top side surface 126 of the molded base 12 tothe top surface of the base board 111 of the circuit board 11 is H2.

In addition, the second inclination angle γ and the third inclinationangle β should not be too large and are ranged in such a manner that thesecond portion inner side surface 1242 and the top side surface 126 haveenough sizes to facilitate demoulding and to avoid stray lights. Inother words, the ranges of the second inclination angle γ and the thirdinclination angle β have restrictive relations with the above parametersL1, L2, L3, L4, H1 and H2.

As shown in FIG. 26 of the drawings, α is 3°, β is 3°, and γ is 3°. TheL1 numerical value is 0.25 mm. The L2 numerical value is 0.21 mm. The L3numerical value is 1.25 mm. The L4 numerical value is 1.18 mm. The H1numerical value is 0.29 mm. The H2 numerical value is 0.78 mm. The firstinclination angle α, the second inclination angle γ and the thirdinclination angle β have predetermined minimum numerical valuesrespectively.

As shown in FIG. 27 of the drawings, α is 15°, β is 15°, and γ is 15°.The L1 numerical value is 0.25 mm. The L2 numerical value is 0.21 mm.The L3 numerical value is 1.25 mm. The L4 numerical value is 0.91 mm.The H1 numerical value is 0.29 mm. The H2 numerical value is 0.78 mm.

As shown in FIG. 28 of the drawings, α is 20°, β is 15°, and γ is 10°.The L1 numerical value is 0.25 mm. The L2 numerical value is 0.21 mm.The L3 numerical value is 1.25 mm. The L4 numerical value is 0.98 mm.The H1 numerical value is 0.29 mm. The H2 numerical value is 0.78 mm.

As shown in FIG. 29 of the drawings, α is 30°, β is 30°, and γ is 45°.The L1 numerical value is 0.28 mm. The L2 numerical value is 0.38 mm.The L3 numerical value is 1.05 mm. The L4 numerical value is 0.41 mm.The H1 numerical value is 0.32 mm. The H2 numerical value is 0.52 mm.The first inclination angle α, the second inclination angle γ and thethird inclination angle β according to the embodiment have predeterminedmaximum values respectively.

It is understandable that the numerical values of above parameters L1,L2, L3, L4, H1, and H2 are exemplary only and not intended to belimiting the scope of the present invention. Practically, the numericalvalues thereof can be changed with the specification requirements of thecamera module 100 and the molded circuit board assembly 10.

According to this embodiment of the present invention, it is possible toillustrate from the above-exemplified data that the appropriate range ofthe first inclination angle α is 3° to 30°, and the appropriate range ofthe second inclination angle γ is 3° to 45°, and the appropriate rangeof the third inclination angle β is 3° to 30°.

Referring to FIG. 30 to FIG. 36C of the drawings, a camera module 100according to a third preferred embodiment of the present invention isillustrated. The camera module 100′ can be applied to various electronicdevices, such as smart phone, wearable device, computer equipment,television, vehicle, camera, monitoring device, and etc., wherein theelectronic devices disclosed above are exemplary only and not intendedto be limiting the scope of the present invention. The camera module100′ is cooperated with an electronic device to perform imageacquisition and reproduction of a target object.

More specifically, a molded photosensitive assembly 10′ of the cameramodule 100′ and a manufacturing equipment 200′ for the camera module100′ are illustrated according to the third preferred embodiment of thepresent invention. The molded photosensitive assembly 10′ comprises acircuit board 11′, a molded base 12′ and a photosensitive element 13′.The molded base 12′ of the present invention is integrally packaged andmolded on the circuit board 11′ and the photosensitive element 13′ bythe manufacturing equipment 200′, wherein the molded base 12′ is capableof replacing the independent holder or support of a conventional cameramodule, and it is unnecessary to adhere such holder or support to thecircuit board by glue through a conventional adhering process.

The camera module 100′ further comprises a lens 30′. The molded base 12′comprises an annular molding body 121′ and has a light window 122′ in acentral portion thereof to provide a light path for the lens 30′ and thephotosensitive element 13′. The photosensitive element 13′ isoperatively connected to the circuit board 11′. For example, thephotosensitive element 13′ is electrically connected to the circuitboard 11′ by connecting elements such as lead wires 15′ through a COB(Chip On Board) process, and the photosensitive element 13′ ispositioned on a top side of the circuit board 11′. The photosensitiveelement 13′ and the lens 30′ are respectively assembled on two sides ofthe molded base 12′ and are optically aligned in such a manner that thelight passing through the lens 30′ is able to reach the photosensitiveelement 13′ via the light window 122′, so that the camera module 100 isable to produce an optical image through a photoelectric conversionprocess.

As shown in FIG. 31A and FIG. 31B of the drawings, the camera module100′ which is embodied as an automatic-focus camera module furthercomprises a lens actuator 40′ such as a voice coil motor, apiezoelectric motor and etc., wherein the lens 30′ is mounted to thelens actuator 40′. The molded base 12′ supports the lens actuator 40′.An optical filter 50′ which is an infrared cut-off filter is provided ona top side of the molded base 12′ to filter lights which passes throughthe lens. The automatic-focus camera module in this embodiment of thepresent invention as shown in the drawings and described above isexemplary only and not intended to be limiting the scope of the presentinvention. In other embodiments of the present invention, the lens 30′could be mounted on the molded photosensitive assembly 10′ without thelens actuator 40′. In other words, the camera module 100′ is a fixedfocus camera module, one skilled in the art will understand that thetype of the camera module is not intended to be limiting and the cameramodule 100′ can be a fixed focus camera module or an automatic-focuscamera module.

The circuit board 11′ comprises a base board 111′ and a plurality ofelectronic components 112′. The plurality of electronic components 112′is formed on the base board 111′ using a technology such as the surfacemount technology. The electronic components 112′ include but are notlimited to resistors, capacitors, and other device drivers. In thisembodiment of the invention, the molded base 12′ is integrally coated onthe electronic components 112′ to further prevent objects such as dustsand debris of a conventional camera module from adhering to theelectronic components 112′ to further pollute the photosensitive element13′ that affects the imaging results. It is understandable that, in analternative mode of the embodiment, the electronic components 112′ areburied in the base board 111′ that, in other words, the electroniccomponents 112′ are not exposed to outside. The base board 111′ of thecircuit board 11′ can be a rigid PCB, a flexible PCB, a rigid-flex PCBor a ceramic substrate. It is worth mentioning that in this preferredembodiment of the present invention, since the molded base 12′ isintegrally molded on the electronic components 112′, the electroniccomponents 112′ is able to be not buried in the base board 111′. Thebase board 111′ is used to form conductive lines, so that the finallyobtained molded photosensitive assembly 10′ has a smaller thickness.

In this third preferred embodiment of the present invention, thephotosensitive element 13′ is overlapped on a flat overlapping region ofthe circuit board 11′ which is on an inner side of the electroniccomponents 112′. The molded base 12′ is integrally formed on the circuitboard 11′ and the photosensitive element 13′ by a molding process. Inother words, the molded base 12′ is integrally combined with the circuitboard 11′ and the photosensitive element 13′. The photosensitive element13′ has a top surface 13′1. The top surface 131′ has a photosensitivearea portion 1311′ in the center thereof and a non-photosensitive areaportion 1312′ positioned around the photosensitive area portion 1311′.The molded base 12′ is integrally molded at least one portion of thenon-photosensitive area portion 1312′ and the circuit board 11′.

Furthermore, as shown in FIG. 30 of the drawing, the manufacturingequipment 200′ for the molded photosensitive assembly 10′ of the cameramodule 100′ comprises a molding mould 210′, a molding material feedingmechanism 220′, a mould fixing unit 230′, a temperature control unit250′ and a controller 260′. The molding material feeding mechanism 220′supplies a molding material 14′ to a base forming guide groove 215′ ofthe molding mould 210′. The mould fixing unit 230′ is operated tocontrol an opened-mould position and a closed-mould position of themolding mould 210′. The temperature control unit 250′ is operated toheat or cool the molding material 14′. The controller 260′ automaticallycontrols operations of the molding material feeding mechanism 220′, themould fixing unit 230′ and the temperature control unit 250′ in themolding process.

The molding mould 210′ comprises a first mould 211′ and a second mould212′. The first mould 211′ and the second mould 212′ are able to beoperated between an opened-mould position and to a closed-mold positionunder control of the mould fixing unit 230′. In other words, the mouldfixing unit 230′ enables to separate the first mould 211′ and the secondmould 212′ to open the molding mould 210′ and to close the first mould211′ and the second mould 212′ to define a molding chamber 213′ betweenthe first mould 211′ and the second mould 212′. When the molding mould210′ is in the closed-mould position, the circuit board 11′ is placedand fixed within the molding chamber 213′ and the liquid moldingmaterial 14′ enters into the molding chamber 213′ and is integrallymolded on the circuit board 11′ and to form the molded base 12′ which isintegrally molded on the circuit board 11′ and the photosensitiveelement 13′ after solidifications.

More specifically, the molding mould 210′ further comprises a lightwindow forming block 214′ and has the base forming guide groove 215′formed around the light window forming block 214′. When the first mould211′ and the second mould 212′ are in the closed-mould position, thelight window forming block 214′ and the base forming guide groove 215′are extended inside of the molding chamber 213′ and the liquid moldingmaterial 14′ is filled into the base forming guide groove 215′, as theposition corresponding to the light window forming block 214′ cannot befilled with the liquid molding material 14′. Accordingly, the liquidmolding material 14′ forms the annular molding body 121′ of the moldedbase 12′ at the position of the base forming guide groove 215′ and thelight window 122′ of the molded base 12′ is formed at the position ofthe light window forming block 214′ after solidification. The materialof the molding material 14′ is selected from the nylon, LCP (LiquidCrystal Polymer), PP (Polypropylene), epoxy resin, and the like. Oneskilled in the art will understand that the material of the moldingmaterial 14′ described above are exemplary only and not intended to belimiting the scope of the present invention.

The first mould 211′ and the second mould 212′ can be two moulds whichhave a relative movement. For example, one of the two moulds is arrangedstationary and the other of the two moulds is arranged in moveablemanner. Alternatively, both of the two moulds are arranged in moveablemanner, the present invention in this aspect described above isexemplary only and not intended to be limiting the scope of the presentinvention. In the embodiment of the present invention, the first mould211′ is specifically embodied as a stationary upper mould and the secondmould 212′ is specifically embodied as a moveable lower mould withrespect to the upper mould. The stationary upper mould 211′ and themoveable lower mould 212′ are provided coaxially so that the lower mould212′ can be operated to move axially towards or away from the uppermould 211′. For example, the moveable lower mould 212′ can slideupwardly along a plurality of positioning shafts to the closed-mouldposition to form the closed molding chamber 213′ between the stationaryupper mould 211′ and the moveable lower mould 212′.

The second mould 212′ which is embodied as the lower mould has a circuitboard positioning groove 2121′. The circuit board positioning groove2121′ has a groove shape or is formed by a plurality of positioningposts for mounting and holding the circuit board 11′ in position insidethe closed molding chamber 213′. The light window forming block 214′ andthe base forming guide groove 215′ can be formed in the first mould 211′which is embodied as the upper mould. When the first mould 211′ and thesecond mould 212′ are in the closed-mould position, the molding chamber213′ is defined therebetween, and the liquid molding material 14′ isfilled into the base forming guide groove 215′ on a top side of thecircuit board 11′, so that the molded base 12′ can be formed on thecircuit board 11′ and the non-photosensitive area portion 1312′ on thetop side of the photosensitive element 13′.

It is understandable that, alternatively, the circuit board positioninggroove 2121′ can also be provided in the first mould 211′ which isembodied as the upper mould adapted for mounting and holding the circuitboard 11′ in position. The light window forming block 214′ and the baseforming guide groove 215′ can be formed in the second mould 212′. Whenthe first mould 211′ and the second mould 212′ are in the closed-mouldposition, the molding chamber 213′ is formed therebetween. The circuitboard 11′ in the upper mound is arranged toward an obverse side and theliquid molding material 14′ is filled into the base forming guide groove215′ which is on a bottom side of the inverted circuit board 11′, sothat the molded base 12′ is formed on the bottom side of the invertedcircuit board 11′.

More specifically, when the first mould 211′ and the second mould 212′are in the closed-mould position and perform the molding step, the lightwindow forming block 214′ is overlapped on the photosensitive areaportion 1311′ of the top surface 131′ of the photosensitive element 13′and is firmly contacted with the photosensitive area portion 1311′ ofthe top surface 131′ of the photosensitive element 13′, so that theliquid molding material 14′ is prevented from entering thephotosensitive area portion 1311′ of the top surface 131′ of thephotosensitive element 13′, so that the light window 122′ of the moldedbase 12′ is formed on the position of the light window forming block214′.

It is understandable that, a molding surface of the first mould 211′forming the base forming guide groove 215′ can be configured as a flatsurface and in the same plane. Thus, when the molded base 12′ is formedafter solidification, a top surface of the molded base 12′ is able to bemade absolutely flat, so that the molded base 12′ provides a flatmounting condition for the lens 30′ or other supporting components ofthe lens 30′, thereby reducing a tilt error of the assembled cameramodule 100′.

It is worth mentioning that the base forming guide groove 215′ and thelight window forming block 214′ can be provided on the first mould 211′in a replaceable manner. In other words, the first mould 211′ furthercomprises a detachable molding configuration, which is formed with thebase forming guide groove 215′ and the light window forming block 214′.Thus, different shapes and sizes of the base forming guide groove 215′and the light window forming block 214′ are designed according todifferent shapes and sizes of the molded photosensitive assembly 10′such as with different diameters and thickness of the molded base. Thus,by replacing different molding configuration, the manufacturingequipment is adapted to be applied on different specificationrequirements for different molded photosensitive assemblies 10′. It isunderstandable that the second mould 212′ can correspondingly comprise adetachable fixed block to provide different shapes and sizes of thecircuit board positioning groove 2121′ so as to facilitate thereplacement of different shapes and sizes of the circuit board 11′.

It is understandable that the molding material 14′ is a thermal fusiblematerial such as a thermoplastic material. A melting and heating deviceturns the solid-state heat fusible material into the liquid moldingmaterial 14′ by heating and melting. During the molding process, the hotand melted molding material 14′ is solidified by a cooling process. Themolding material 14′ can also be a thermosetting material. Thethermosetting material is heated and melted to turn into the liquidmolding material 14′ by the melting and heating device. During themolding process, the thermosetting molding material 14′ is solidified bya further heating process, and the molding material 14′ cannot be meltedagain after solidification, thereby forming the molded base 12′.

It is understandable that in the molding process of the presentinvention, the molding material 14′ can be in the form of a block, apellet, or a powder, which becomes liquid in the molding mould 210′after heating and is then cured to form the molded base 12′ aftersolidification.

It is understandable that, according to the third embodiment, a moldingprocess of the circuit board 11′ is illustrated, wherein, in theapplication of the manufacturing equipment 200′, a plurality ofseparated circuit boards 11′ can be molded at the same time.Alternatively, a joint board array operation mentioned in the followingembodiment is also adapted.

Referring to FIG. 36A to FIG. 36C of the drawings, a manufacturingprocess of the molded photosensitive assembly 10′ of the camera module100′ according to the preferred embodiment of the present invention isillustrated. As shown in FIG. 36A of the drawings, the molding mould210′ is in the closed-mould position, the circuit board 11′ which isabout to be molded and the solid molding material 14′ are placed inposition therein. The solid molding material 14′ is heated and meltedinto a liquid state or into a semi-solid state, which is pressured tofill into the base forming guide groove 215′ until reaching around thelight window forming block 214′.

As shown in FIG. 36B of the drawings, when the base forming guide groove215′ is filled with the liquid molding material 14′, the liquid moldingmaterial 14′ is solidified to form the molded base 12′ which isintegrally formed on the circuit board 11′ and the photosensitiveelement 13′. Take the molding material 14′ being embodied as athermosetting material as an example, in the embodiment of the presentinvention, the heated and melted liquid molding material 14′ issolidified after being heated.

As shown in FIG. 36C of the drawings, after the molding material 14′ iscured to form the molded base 12′, a demoulding process is performed. Inthe demoulding process, the mould fixing unit 230′ moves the first mould211′ and the second mould 212′ away from each other to the opened-mouldposition, thus the light window forming block 214′ is departed from themolded base 12′ and the light window 122′ is formed in the molded base12′.

In the prior art, as shown in FIG. 1B of the drawings, it is generally anon-practical concept for mass production because a bottom of thesquare-shaped molding block 4 has a sharp edge. During the demouldingprocess, the sharp edge produces a large friction with the inner surfaceof an encapsulation portion 1 that results in damaging the inner surfaceof the encapsulation portion 1. However, according to the presentinvention, the light window forming block 214′ of the present inventionis configured that the molded base 12′ will not be damaged during thedemoulding process.

More specifically, according to the above embodiment of the presentinvention, as shown in FIG. 36A to FIG. 36C of the drawings, the lightwindow forming block 214′ has a trapezoid cross section. In other words,the light window forming block 214′ has a pyramidal cross section with atransversal size gradually reduced along a longitudinal axis, and thelight window forming block 214′ is a solid body or a hollow body coveredon the photosensitive element 13′ in order to facilitate the subsequentmolding process.

In the embodiment of the present invention, the light window formingblock 214′ is a solid structure. The light window forming block 214′ hasa press-fit surface 2141′ on its bottom side and a peripheral moldingsurface linearly extended along the circumferential direction,functioning as a base inner side surface forming surface 2142′. Theincluded angle between the base inner side surface forming surface 2142′and a vertical (longitudinal) line is defined as a first included angle,which is an acute angle, while the conventional included angle as shownin FIGS. 1B and 1C is 0 degree. More specifically, the angular range ofthe first included angle is preferably 10° to 80°, and more preferably30° to 55°.

Accordingly, as shown in FIG. 33 and FIG. 34 of the drawings, theannular molding body 121′ of the molded base 12′ of the moldedphotosensitive assembly 10′ of the camera module 100′ has a linearlyextended inner side surface 124′. A first inclination angle α is definedbetween the inner side surface 124′ and a longitudinal line direction ofthe optical axis Y of the photosensitive element 13′ of the moldedphotosensitive assembly 10′, wherein the first inclination angle α isthe same as the first included angle correspondingly, which angularrange is preferably 10° to 80°, and more preferably 30° to 55°.

The first inclination angle α is not supposed to be as large aspossible. As shown in FIG. 34 of the drawings, the photosensitiveelement 13′ is electrically connected to the circuit board 11′ by a setelectrical connection means. More specifically, each of the electricalconnection means comprises a photosensitive element connecting pad 132′provided on the non-photosensitive area portion 1312′ of thephotosensitive element 13′, a circuit board connecting pad 113′ providedon the base board 111′ of the circuit board 11′ and a connecting elementsuch as lead wire 15′ extended and electrically connected between thephotosensitive element connecting pad 132′ and the circuit boardconnecting pad 113′, so that the photosensitive element 13′ and thecircuit board 11′ are electrically conducted and connected. The leadwires 15′ are illustratively but not limited to gold wire, silver wire,copper wire, aluminum wire, and the like. The shapes of thephotosensitive element connecting pad 132′ and the circuit boardconnecting pad 113′ are illustratively but not limited to squares,spheres, and the like. The base inner side surface forming surface 2142′of the light window forming block 214′ should not have any contact withthe lead wires 15′. i.e. must not extend to exceed a highest point ofeach of the lead wires 15′ in the molding process as shown in FIG. 36A.The maximum value of the first inclination angle α differs depending onthe manner of the wire bonding process, which will be furtherspecifically analyzed in the following specific examples. Therefore, thelight window forming block 214′ will not crush the lead wires 15′ tocause breakage of the lead wires 15′ when the light window forming block214′ is in contact with the photosensitive element 13′ in the moldingprocess as shown in FIG. 36A.

As shown in FIG. 36A of the drawings, the light window forming block214′ has a trapezoidal cross section that gradually reduces itstransverse size from the bottom to the top thereof. Correspondingly, thelight window 122′ formed in the molded base 12′ has a trapezoidal crosssection that gradually increases its transverse size from the bottom tothe top thereof. The angular range of the first inclination angle α ispreferably from 10° to 80°, and more preferably is 30° to 55°, so as tofacilitate the demoulding process without damaging the lead wires 15′.In addition, the light window 122′ of the molded base 12′ having atrapezoidal cross section can save molding material while ensuringdesired strength of the molded base 12′.

It is worth mentioning that it is also possible to effectively avoid thestray light by selecting the right angular range of the firstinclination angle α according to the present invention. As shown in FIG.1E of the drawings according to the conventional packaged camera module,the incident light through a lens has a portion reaching aphotosensitive chip for light-receiving process while other portion ofthe incident light, such as the light beam as shown in FIG. 1E, isprojected onto the longitudinal inner walls of the encapsulation portion1, which is easily reflected by the inner wall of the encapsulationportion 1 to reach the photosensitive chip 3 for photoelectricconversion process of the photosensitive chip 3, thereby adverselyaffecting imaging quality of the conventional camera module withreflected stray light. However, according to this preferred embodimentof the present invention, as shown in FIG. 35 of the drawings, incidentlight through the lens 30′ has a major portion reaches thephotosensitive element 13′. Other portion of the incident light, such asthe light beam as shown in FIG. 35 in the same direction and angle ofthe light beam in FIG. 1E, is projected onto the inner side surface 124′of the molded base 12′ and is reflected out by the inner side surface124′ of the molded base 12′ to the other side of the inner side surface124′, wherein the reflected light is distant from the photosensitiveelement 13′ without reaching the photosensitive element 13′ to preventany photoelectric conversion process therefor by the photosensitiveelement 13′, thereby reducing the influence of reflected stray light onthe imaging quality of the camera module 100′.

It is worth mentioning that, in this preferred embodiment of the presentinvention, the material surface of the molded base 12′ has areflectivity of less than 5% in the wavelength range of 435-660 nm. Inother words, most of the incident light projecting on the surface of themolded base 12′ cannot be reflected to form the interference stray lightreaching the photosensitive element 13′, thereby remarkably reducing theinfluence of reflected stray light according to the present invention.

In addition, as shown in FIGS. 33 and 34 of the drawings, the moldedbase 12′ has the inner side surface 124′ extended along an innercircumferential direction thereof, an outer side surface 125′ extendedalong an outer circumferential direction thereof, and an annular topside surface 126′. The inner side surface 124′ is extended outwardly andintegrally from the top surface 131′ of the photosensitive element 13′.The outer side surface 125′ is extended inwardly and integrally from thebase board 111′ of the circuit board 11′.

As shown in FIGS. 36A to 36C, the first mould 211′ of the molding mould210′ is further provided with one or more dividing blocks 216′ forforming the outer side surface 125′ of the molded base 12′ during themolding process. More specifically, the dividing blocks 216′ has a baseouter side surface forming surface 2161′ to determine a position andshape of the outer side surface 125′ of the molded base 12′ which isformed by the molding material 14′ after solidification in the moldingprocess. A top surface forming surface 217′ is formed between thedividing blocks 216′ and the light window forming block 214′ todetermine a position and shape of the top side surface 126′ of themolded base 12′ which is formed by the molding material 14′ aftersolidification in the molding process.

In the prior art, as shown in FIGS. 1A to 1E, the outer surface of theencapsulation portion 1 is also perpendicular to the circuit board. Inother words, a base outer surface forming surface of a partition blockof the conventional mould is vertically oriented so that during thedemoulding process, the base outer surface forming surface of thepartition block of the conventional mould is always rubbed against theencapsulation portion 1, so that the demoulding process is inconvenientto operate, especially in mass production, and the outer side surface ofthe encapsulation portion 1 is easily damaged that results in greatamount of defective products.

However, according to the preferred embodiment of the present invention,the base outer side surface forming surface 2161′ further has a secondincluded angle with respect to a longitudinal direction.Correspondingly, a second inclination angle γ is defined between theouter side surface 125′ of the molded base 12′ and the optical axis Ydirection, having the same angle of the second included angle, as shownin FIG. 46. In other words, when the molded base 12′ is horizontallyarranged, the outer side surface 125′ of the molded base 12′ defines thesecond inclination angle γ with respect to the vertical (longitudinal)line. For ease of demoulding, the second inclination angle γ is an acuteangle and the second inclination angle γ cannot be too large as the topside surface 126′ of the molded base 12′ is needed to have a sufficientsize to facilitate the subsequent installment of the lens 30′ or thelens actuator 40′. In other words, if the second inclination angle γ istoo large and the inner side surface 124′ and the outer side surface125′ of the molded base 12′ are both inclinedly extended upwardly, thesize of the top side surface 126′ will be too small to securely installthe lens 30′ or the lens actuator 40′. In addition, in this embodiment,the bottom portion of the lens actuator 40′ has a mating surface whichfits to the top side surface 126′ of the molded base 12′. When the topside surface 126′ of the molded base 12′ has a too small dimension, forexample, less than the mating surface, it is inconvenient for thealignment of the lens actuator 40′ that, when the lens actuator 40′ ismounted on the top side surface 126′ of the molded base 12′, the lensactuator 40′ may be shaken and not stable, and the lens actuator 40′ isunable to prevent crashing or be anti-collision. Accordingly, accordingto a preferred embodiment of the present invention, the numericalmaximum of the second inclination angle γ is preferably not more than45°. In addition, with a numerical minimum of the second inclinationangle γ, the demoulding operation of the molding process can befacilitated and the manufacturing of the molding mould 210′ can also befacilitated. Therefore, the numerical minimum of the second inclinationangle γ is preferably not smaller than 3°. Therefore, the angular rangeof the second inclination angle γ in the embodiment of the presentinvention is suitably 3° to 45°, more preferably 3° to 15°. It is worthmentioning that, as shown in FIG. 33 of the drawings, a press-fitdistance W is formed on an outer edge of the base board 111′ of thecircuit board 11′ and the outer side surface 125′ of the formed moldedbase 12′, so that it facilitates the demoulding and to press-fit thebase board 111′ of the circuit board 11′. In other words, in the moldingprocess, the dividing blocks 216′ are suitable to press-fit on theregion of the base board 111′ of the circuit board 11′, the press-fitdistance W is a distance from a position which is the outer side surface125′ of the molded base 12′ extended from the base board 111′ of thecircuit board 11′ to the outer edge of the base board 111′ of thecircuit board 11′. For example, the press-fit distance W has a range of0.1˜10 mm, preferably 0.1˜0.6 mm. In a specific example, the press-fitdistance W is 0.5 mm.

It is understandable that because of the first inclination angle α andthe second inclination angle γ and, in other words, as the inner sidesurface 124′ and the outer side surface 125′ of the molded base 12′having inclinations, during the demould process, the friction betweenmolded base 12′ and the first mould 211′ is reduced and the molded base12′ is much easier to be drafted out, such that the molded base 12′ hasa better molding state. More specifically, as shown in FIG. 36C of thedrawings, when the molded base 12′ is cured and formed in the moldingprocess and, in the demoulding process, the light window forming block214′ and the dividing blocks 216′ begin to move vertically and upwardly,the base inner side surface forming surface 2142′ of the light windowforming block 214′ and the base outer side surface forming surface 2161′of the dividing blocks 216′ are respectively separated with the innerside surface 124′ of the molded base 12′ and the outer side surface 125′of the molded base 12′, so that the base inner side surface formingsurface 2142′ of the light window forming block 214′ and the base outerside surface forming surface 2161′ of the dividing blocks 216′ are notrespectively in friction contact with the inner side surface 124′ of themolded base 12′ and the outer side surface 125′ of the molded base 12′,thereby avoiding damages to the inner side surface 124′ and the outerside surface 125′ of the molded base 12′ and at the same timefacilitating a smooth drafting of the molded base 12′.

At the same time, the shape of the base forming guide groove 215′ formedby the molding mould 210′ is at an appropriate gradient without aright-angled corner in such a manner that the fluid form moldingmaterial 14′ entering into the base forming guide groove 215′ has abetter liquidity. Furthermore, the first inclination angle α and thesecond inclination angle γ are acute angles, unlike the prior artright-angle configuration, so that the angle of the top surface 131′ ofthe photosensitive element 13′ of the molded photosensitive assembly 10′and the inner side surface 124′ of the molded base 12′ becomes arelatively rounded obtuse angle. The light window forming block 214′ andthe dividing blocks 216′ do not form sharp edges and corners to scratchthe inner side surface 124′ and the outer side surface 125′ of themolded base 12′. Furthermore, the angular range of the first inclinationangle α enables the molded base 12′ to prevent the stray light fromadversely affecting the image quality of the camera module 100′.

As shown in FIG. 37 of the drawings, according to another alternativemode of the present invention, an optical filter 50′ is overlapped onthe photosensitive element 13′, and then the molded base 12′ isintegrally molded on the circuit board 11′ and extended to the peripheryedges of the optical filter 50′ and the photosensitive element 13′ sothat the optical filter 50′, the photosensitive element 13′ and themolded base 12′ of the circuit board 11′ are integrally combinedtogether by the molding process of the present invention.

Referring to FIG. 38 to FIG. 49 of the drawings, the moldedphotosensitive assembly 10′ of the camera module 100′ and themanufacturing process thereof according to a fourth preferred embodimentof the present invention are illustrated. In this embodiment of thepresent invention, an integral piece of molded photosensitive assemblyarray 1000′ can be manufactured by a joint board array operation, andthe molded photosensitive assembly 10′ is obtained by cutting theintegral piece of molded photosensitive assembly array 1000′.

Accordingly, more specifically, the molding chamber 213′ is formed whenthe molding mould 210′ is in the closed-mould position, and a pluralityof the light window forming blocks 214 and one or more integral basearray forming guide grooves 2150′ are provided. In other words, aplurality of the base forming guide grooves 215 communicated with eachother is provided and these base forming guide grooves 215′ form anoverall guiding groove.

Before the molding process, an integral piece of circuit board array1100′ is manufactured in advance. The integral piece of circuit boardarray 1100′ comprises a plurality of circuit boards 11′ integrallyconnected with each other, and each of the circuit boards 11′ iselectrically connected to the photosensitive element 13′ by lead wires.

When the integral piece of circuit board array 1100′ with a plurality ofthe photosensitive elements 13′ is put into the molding chamber 213′ andthe molding mould 210′ is in the closed-mould position, the solidmolding material 14′ is heated to melt and is pressured to enter each ofthe integral base array forming guide grooves 2150′, thereby the liquidmolding material 14′ is filled around each of the light window formingblocks 214′. Finally, during a solidifying process, the liquid moldingmaterial 14′ in the integral base array forming guide groove 2150′ issolidified and hardened to form the molded bases 12′ each of which isintegrally molded on each of the circuit boards 11 of the integral pieceof circuit board array 1100′ and the photosensitive element 13′. Thesemolded bases 12′ form an overall integral piece of molded base array1200′.

The molding surface of the first mould 211′ contacted with the circuitboard 11′ and the photosensitive element 13′ is also provided with anelastic film layer 219′, as shown in FIG. 44, so that the moldingsurface of the first mould 211′ is firmly contacted with the circuitboard 11′ and the photosensitive element 13′ that is convenient fordemoulding.

It is worth mentioning that when each of the separated moldedphotosensitive assemblies 10′ is manufactured by cutting the integralpiece of molded photosensitive assembly array 1000′ to manufacture theauto-focus camera module, the molding mould 210′ further comprises aplurality of lens actuator pin groove forming blocks 218′. Each of thelens actuator pin groove forming blocks 218′ is extended in therespective integral base array forming guide groove 2150′, so that inthe molding process, the liquid molding material 14′ is not filled inthe positions corresponding to the lens actuator pin groove formingblocks 218′, and thus after a solidifying step, a plurality of the lightwindows 122′ and a plurality of the lens actuator pin grooves 127′ areformed in the integral piece of molded base array 1200′ of the integralpiece of molded photosensitive assembly array 1000′, wherein the moldedbase 12′ of each of the separated molded photosensitive assembly 10′obtained by cutting is provided with the lens actuator pin grooves 127′.Therefore, during the camera module 100′ is being manufactured, a lensactuator pin 41′ of the lens actuator 40′ is electrically connected tothe circuit board 11′ of the molded photosensitive assembly 10′ bywelding or by attaching through a conducting resin.

It is understandable that, in comparison with the manufacturing processof the separated molded photosensitive assembly 10′ in the above firstembodiment of the present invention, in the joint board array operation,two adjacent base forming guide groove 215′ forming two molded bases 12′are jointed together while the plurality of the light window formingblocks 214′ are spaced with each other, so that the molding material 14′eventually forms the integral piece of molded base array 1200′ with anoverall configuration.

In the step of manufacturing the separated molded photosensitiveassembly 10′, the integral piece of molded photosensitive assembly array1000′ is cut into a plurality of molded photosensitive assemblies 10′ tomanufacture a plurality of independent single camera modulesrespectively. Alternatively, separate two or more molded photosensitiveassemblies 10′ which are combined with each other from the integralpiece of molded photosensitive assembly array 1000′ can be separated andmanufactured by cutting so as to manufacture a split type camera modulearray. In other words, each of the camera modules of the camera modulearray respectively has an individual molded photosensitive assembly 10′,wherein two or more molded photosensitive assemblies 10′ arerespectively and electrically connected to a controlling mainboard ofthe same electric device. Thus, the camera module array manufactured bytwo or more molded photosensitive assemblies 10′ transmits the imagescaptured by the camera modules to the controlling mainboard for graphicinformation processing.

As shown in FIG. 50 of the drawings, the molding process of the jointboard array operation also can be used to make a molded photosensitiveassembly 10′ with two or more light window 122′, wherein the moldedphotosensitive assembly 10′ can be used to manufacture a camera modulearray sharing a same base board. In other words, taking the moldedphotosensitive assembly 10′ of an array of double camera modules as anexample, for each of the circuit boards 11 of the integral piece ofcircuit board array 1100′ in the molding process, one base board 111′ iscorrespondingly provided with two light window forming blocks 214′. Thelight window forming blocks 214′ are spaced with each other and two baseforming guide grooves which are communicated with each other aredisposed around the light window forming blocks 214′. Therefore, afterthe molding process, the circuit board 11′ together form an integralmolded base which shares one base board 111′ and has two light windows122′, wherein two photosensitive elements 13′ and two lenses 30′ arecorrespondingly mounted thereon respectively. Furthermore, the baseboard 111′ of the circuit board 11′ can be electrically connected to acontrolling board of an electric device, and thus camera module arraymanufactured in this embodiment transmits the images captured by thecamera modules to the controlling mainboard for graphic informationprocessing.

As shown in FIG. 51 of the drawings, according to an alternative mode ofthe above preferred embodiments of the present invention, the moldedbase 12′ is integrally extended upwardly to form a lens mounting portion16′. The lens mounting portion 16 has a through hole 161 for mountingthe lens 30′. It is worth mentioning that the light window forming block214′ and the dividing blocks 216′ also may have an arc-shaped chamferingtransition in each of the angular positions so as to form an arc-shapedcorner edge between the lens mounting portion 16′ and the molded base12′ as well as an arc-shaped inner bottom edge of the molded base 12 tofurther prevent damage to the formed molded base 12′ during demoulding.

As shown in FIG. 52 of the drawings, according to another alternativemode of the present invention, before the molding process, thephotosensitive element 13′ is provided with an annular blocking element17′. The blocking element 17′ is elastic and attached or coated on thenon-photosensitive area portion 1312′ of the top surface 131′ of thephotosensitive element 13′. Accordingly, in the molding process, thelight window forming block 214′ is press-fit onto the blocking element17′ to prevent the molding material 14′ from entering the photosensitivearea portion 1311′ of the photosensitive element 13′, and the press-fitsurface 2141′ of the light window forming block 214′ is separated withthe photosensitive element 13′, so that the press-fit surface 2141′ ofthe light window forming block 214′ will not damage the photosensitivearea portion 1311′ of the photosensitive element 13′. In someembodiments, the blocking element 17′ has a square ring shape and isimplemented as an adhesive step form. In other words, thenon-photosensitive area portion 1312′ of the top surface 131′ of thephotosensitive element 13′ is coated or painted in thenon-photosensitive area portion 1312′ of the top surface 131′ of thephotosensitive element 13′ by adhesive element which will be cured toform the blocking element 17′.

Referring to FIG. 39 to FIG. 43 of the drawings, the camera module 100′,according to a fourth preferred embodiment of the present invention isfurther illustrated. The camera module 100′ comprises the moldedphotosensitive assembly 10′. The molded photosensitive assembly 10′comprises the circuit board 11′, the molded base 12′ and thephotosensitive element 13′. The camera module 100′ further comprises thelens 30′. The molded base 12′ comprises the annular molding body 121′and has the light window 122′ formed in a central portion thereof toprovide a light path for the lens 30′ and the photosensitive element13′. The photosensitive element 13′ is operatively connected to thecircuit board 11′. For example, the photosensitive element 13′ iselectrically connected to the circuit board 11′ by the lead wires 15′ ina COB process, and the photosensitive element 13′ is positioned on a topside of the circuit board 11′. The photosensitive element 13′ and thelens 30′ are respectively assembled on two sides of the molded base 12′and are optically aligned in such a manner that the light passingthrough the lens 30′ is able to reach the photosensitive element 13′ viathe light window 122′, so that the camera module 100′ is able to providean optical image through a photoelectric conversion action. As shown inFIG. 53 of the drawings, the camera module 100′ applied on anintelligent electronic device 300′ is illustrated. For example, thecamera module 100′ is applied on a mobile phone and is arranged along athickness direction of the body 310′ of mobile phone. In addition, oneor more camera modules 100′ can be assembled in the front and the backof the mobile phone.

The difference between the first embodiment and this fourth embodimentof the present invention is that a top groove 123′ is formed on a topside of the molded base 12′ for mounting the optical filter 50′.Alternatively, as shown in FIGS. 40 and 42 of the drawings, the topgroove 123′ is used to support an additional optical filter holder 60′for mounting the optical filter 50′.

Accordingly, the circuit board 11′ comprises a base board 111′ and aplurality of electronic components 112′. The plurality of electroniccomponents 112′ is formed on the base board 111′ using a technology suchas the surface mount technology. The photosensitive element 13′ has atop surface 131′. The top surface 131′ has a photosensitive area portion1311′ in the center and a non-photosensitive area portion 1312′ aroundthe photosensitive area portion 1311′. The molded base 12′ is integrallymolded on the circuit board 11′ and at least one portion of thenon-photosensitive area portion 1312′, and the molded base 12′ is alsomolded to encapsulate the electronic components 112′.

The molded base 12′ has an inner side surface 124′, an outer sidesurface 125′ and a top side surface 126′. In other words, the inner sidesurface 124′ is formed along the inner circumferential direction of themolded base 12′ and the outer side surface 125′ is formed along theouter circumferential direction of the molded base 12′ while the annulartop side surface 126′ defines a shape of the annular molding body 121′.

In this embodiment, as shown in FIG. 42, the inner side surface 124′ ofthe molded base 12′ is not a linearly extended flat inner surface, but acurved extending inner surface. More specifically, the inner sidesurface 124′ further has a first portion inner side surface 1241′, asecond portion inner side surface 1242′ and a third portion inner sidesurface 1243′ integrally extended. As shown in the drawings, taking thearrangement which is in a vertical (longitudinal) direction of thecamera module 100′ as an example, the first portion inner side surface1241′ is integrally and inclinedly extended from the non-photosensitivearea portion 1312′ of the photosensitive element 13′, the second portioninner side surface 1242′ is basically extended from the first portioninner side surface 1241′ along a horizontal (transversal) direction, thethird portion inner side surface 1243′ is integrally and inclinedlyextended from the second portion inner side surface 1242′. The annularmolding body 121′ of the molded base 12′ is correspondingly formed witha base station portion 121 a′ on a bottom side, and a step portion 121b′ which is integrally extended from the base station portion 121 a′.The step portion 121 b′ forms an overall integral annular step, or thestep portion 121 b′ is multi-section type such as three-section type andone side of the molded base 12′ has no step protrusion. The step portion121 b′ has a relative smaller width than the base station portion 121a′. The inner surface of the base station portion 121 a′ is the firstportion inner side surface 1241′ of the inner side surface 124′ of themolded base 12′, the inner surface of the stair portion 121 b′ is thethird portion inner side surface 1243′ of the inner side surface 124′ ofthe molded base 12′ and the top surface of the stair portion 121 b′ isthe top side surface 126′ of the molded base 12′.

It is understandable that the first portion inner side surface 1241′ anda longitudinal line direction of the optical axis Y of the camera module100′ define a first inclination angle α. In other words, when the cameramodule 100′ is aligned along the vertical direction, the first portioninner side surface 1241′ and the vertical line define the firstinclination angle α. The extending direction of the second portion innerside surface 1242′ is substantially perpendicular to a longitudinal linedirection of the optical axis Y of the camera module 100′. The thirdportion inner side surface 1243′ and the longitudinal line direction ofthe optical axis Y of the camera module 100′ define a third inclinationangle β. That is, when the camera module 100′ is aligned in the vertical(longitudinal) direction, the third portion inner side surface 1243′ andthe vertical (longitudinal) line define the third inclination angle β.

The outer side surface 125′ of the molded base 12′ which is extendedfrom the 1111 of the base board 111′ of the circuit board 11′ has one ormore outer peripheral surfaces 1251′. In the fourth preferred embodimentof the present invention, as the integrally connected integral piece ofmolded photosensitive assembly array 1000′ is manufactured and is cutinto individual molded photosensitive assemblies 10′, some outerperipheral surfaces 1251′ of the outer side surface 125′ of the moldedbase 12′ of the molded photosensitive assembly 10′ are formed bycutting, so that the outer peripheral surfaces 1251′ can be vertical andflat surfaces. While at least one of the outer peripheral surfaces 1251′is defined by the base outer side surface forming surface 2161′ of thedividing blocks 216′ of the molding mould 210′ in the molding process.As shown in FIG. 49 of the drawings, the front outer peripheral surface1251′ of the molded photosensitive assembly 10′ obtained by cutting isformed by the base outer side surface forming surface 2161′ of thedividing blocks 216′ of the molding mould 210′. The front outerperipheral surfaces 1251′ and the longitudinal line direction of theoptical axis Y of the camera module 100′ define the second inclinationangle γ. In other words, when the camera module 100′ is aligned in thevertical (longitudinal) direction, the front outer peripheral surfaces1251′ and the vertical (longitudinal) line define the second inclinationangle γ. In addition, the molded base 12′ is also formed with one ormore lens actuator pin grooves 127′. Each of the lens actuator pingrooves 127′ has a pin groove wall 1271′. The pin groove wall 1271′ andthe longitudinal line direction of the optical axis Y of the cameramodule 100′ define a fourth inclination angle δ, as shown in FIG. 46. Inother words, when the camera module 100′ is aligned in the vertical(longitudinal) direction, the pin groove wall 1271′ and the vertical(longitudinal) line define the fourth inclination angle δ.

It is worth mentioning that, similar to the above embodiment of thepresent invention, as shown in FIG. 42 of the drawings, a press-fitdistance W is formed on an outer edge of the base board 111′ of thecircuit board 11′ and the outer side surface 125′ of the formed moldedbase 12′, so as to facilitate demoulding and to press-fit the base board111′ of the circuit board 11′. The press-fit distance W has a range of0.1˜10 mm, preferably 0.1˜0.6 mm. For example, the press-fit distance Wis 0.5 mm.

According to the embodiment of the present invention, the angular rangeof the first angle α is 10°˜80°, while in other embodiments, the angularrange of the first angle α can be 10° to 30°, 30°˜45° or 45°˜55°, or55°˜80°. The angular range of the second angle γ is 3°˜45°, while inother embodiments, the angular range of the second angle γ can be3°˜15°, 15°˜30° or 30°˜45°. The angular range of the third angle β is3°˜30°, while in other embodiments, the angular range of the third angleβ can be 3°˜15°, 15°˜20° or 20°˜30′°. The angular range of the fourthangle δ is 3°˜45°, while in other embodiments, the angular range of thethird angle β can be 3°˜15°, 15°˜30° or 30°˜45°.

The light window forming block 214′ and the dividing blocks 216′ areformed in a frustum-pyramidal shape, and edges and corners of the lightwindow forming block 214′ and the dividing blocks 216′ are linearlytransitioned or curvedly transitioned in an arc shape. However, theextending angles ranges of the surfaces are substantially within theabove-mentioned specific range.

Correspondingly, the first mould 211′ of the molding mould 210′ isconfigured with an overall integral molding surface to form the moldedbase 12′ with above structure. More specifically, as shown in FIG. 44 ofthe drawings, the light window forming block 214′ comprises a press headportion 214 a′ in a bottom side and a groove forming portion 214 b′ on atop side. The press head portion 214 a′ and the groove forming portion214 b′ together form the light window 122′ of the molded base 12′. Thegroove forming portion 214 b′ forms the top groove 123′ on the top sideof the molded base 12′.

It is understandable that the light window forming block 214′ comprisesa press-fit surface 2141′ on a bottom side and a base inner side surfaceforming surface 2142′ along an outer circumferential direction.Furthermore, in this embodiment, the base inner side surface formingsurface 2142′ of the light window forming block 214′ comprises a firstportion forming surface 21421′, a second portion forming surface 21422′and a third portion forming surface 21423′ integrally extended. Thefirst portion forming surface 21421′, the second portion forming surface21422′ and the third portion forming surface 21423′ are respectively andcorrespondingly provided for forming the first portion inner sidesurface 1241′, the second portion inner side surface 1242′ and the thirdportion inner side surface 1243′ respectively, which are integrallyextended in an inner side of the molded base 12′.

According to the embodiment of the present invention, as shown in thedrawings, the camera module 100′ is vertically (longitudinal) aligned,the longitudinal direction of the optical axis Y of the photosensitiveelement 13′ of the camera module 100′ is parallel to the vertical(longitudinal) line. Correspondingly, the first portion forming surface21421′ and the vertical line have the first inclination angle α in therange of 10°˜80°. The third portion forming surface 21423′ and thevertical (longitudinal) line define the third inclination angle β in therange of 3°˜30′°.

Correspondingly, the bottom side surface of the press head portion 214a′ forms the press-fit surface 2141′ of the light window forming block214′. The outer side surface of the press head portion 214 a′ forms thefirst portion forming surface 21421′ of the light window forming block214′. The bottom side surface of the groove forming portion 214 b′ formsthe second portion forming surface 21422′ of the light window formingblock 214′. The outer side surface of the groove forming portion 214 b′forms the third portion forming surface 21423′ of the base forming guidegroove 215′. The press head portion 214 a′ and the groove formingportion 214 b′ are configured to have a frustum-pyramidal shape. Thepress head portion 214 a′ and the groove forming portion 214 b′ havetrapezoid cross sections, thereby preventing damages to the elastic filmlayer 219′. More specifically, taking the groove forming portion 214 b′as an example, unlike the molding block in the prior art as shown inFIGS. 1A to 1E having sharp edges and corners, the film layer 219′ willnot be pierced on the position in the demoulding process according tothe present invention, where the second portion forming surface 21422′is connected to the third portion forming surface 21423′. While thesecond portion forming surface 21422′ on the bottom side of the grooveforming portion 214 b′ and the third portion forming surface 21423′ onthe outer peripheral side of the groove forming portion 214 b′ define anobtuse angle that facilitates the demoulding of the groove formingportion 214 b′.

As shown in FIGS. 43 to 45, the outer side surface 125′ of the moldedphotosensitive assembly 10′ has at least one outer peripheral surface1251′ and the dividing blocks 216′ has a base outer side surface formingsurface 2161′. The base outer side surface forming surface 2161′ and thevertical (longitudinal) line define the second inclination angle γ witha range of 3°˜45°.

As shown in FIG. 46, the molding mould 210′ further comprises aplurality of the lens actuator pin groove forming blocks 218′, eachhaving a pin groove side surface forming surface 2181. The pin grooveside surface forming surface 2181′ and the vertical (longitudinal) linedefine the fourth inclination angle δ with a range of 3°˜30′°.

Correspondingly, like the above preferred embodiments, the abovestructure of the first mould 211′ of the molding mould 210′ and themolded base 12′ according to the fourth preferred embodiment also havethe following advantages.

Firstly, it is convenient for demoulding the dividing blocks 216′ andthe light window forming block 214′ of the first mould 211′. In otherwords, as the first inclination angle α, the second inclination angle γ,the third inclination angle β and the fourth inclination angle δ whichare acute angles are provided to facilitate demoulding, the light windowforming block 214′ and the dividing blocks 216′ which have reducedfrictions with the molded base 12′ and the molded base 12′ are easy tobe removed so as to obtain a better molded state. As shown in FIG. 47 ofthe drawings, as along as the light window forming block 214′ and thedividing blocks 216′ are departed from the molded base 12′ and haveupward and downward relative displacements, friction is avoided betweenthe light window forming block 214′ and the dividing blocks 216′ withthe molded base 12′. In other words, the first portion forming surface21421′, the second portion forming surface 21422′ and the third portionforming surface 21423′ of the light window forming block 214′ arerespectively separated with the first portion inner side surface 1241′,the second portion inner side surface 1242′ and the third portion innerside surface 1243′ of the molded base 12′. The base outer side surfaceforming surface 2161′ of the dividing blocks 216′ and the outer sidesurface 125′ of the molded base 12′ are separated, and the light windowforming block 214′ and the dividing blocks 216′ are capable of beingeasily drafted from the molded base 12′, thereby reducing the adverseinfluence to the molding condition and effect of the molded base 12′.

Secondly, the shape of the integral base array forming guide groove2150′ formed by the molding mould 210′ has no right-angled corners andhas an appropriate gradient such that the liquid molding material 14′has a better liquidity entering the base forming guide groove 215′. Inother words, as the molding material 14′ is generally in a liquid stateduring the molding process and is needed to flow in the molding chamber213′, the size of flowing area influences the filling effect of themolding material 14′. The structure of the integral base array formingguide groove 2150′ according to the embodiment of the present inventionincreases the flowing rate of the molding material 14′, so that themolded base 12′ is molded in a shorter time and is benefit for themolding of the molded base 12′.

Thirdly, the first inclination angle α, the second inclination angle γ,the third inclination angle β and the fourth inclination angle δ areacute angles, other than the right angle configuration in the prior art.The light window forming block 214′ and the dividing blocks 216′ do notformed any sharp edges and corners that would damage the inner sidesurface 124′ and the outer side surface 125′ of the molded base 12′.

Fourthly, as the first inclination angle α, the second inclination angleγ, the third inclination angle β and the fourth inclination angle δwhich are acute angles are provided, the inner side surface 124′ of themolded base 12′, at least one portion of the outer side surface 125′ andthe pin groove wall 1271′ are in slant shape, so that the size of themolded base 12′ is relatively smaller and the overall molding material14′ needed to be filled is decreased.

Fifthly, the acute angle range of the first inclination angle α and thethird inclination angle β are capable of avoiding the stray lightaffecting the imaging quality of the camera module 100′. Morespecifically, it reduces the possibility of stray light reaching thephotosensitive element photosensitive element 13′. That is, when theincident stray light in the camera module 100′ is projected on thecurved extending inner side surface 124′ of the molded base 12′, theaslant first portion inner side surface 1241′, the third portion innerside surface 1243′ and the second portion inner side surface 1242′ whichis extended along the horizontal (transversal) direction reflect theincident stray light away from the photosensitive element 13′,preventing the incident stray light from easily reaching thephotosensitive element 13′ to affect the image quality of the cameramodule 100′.

In addition, the ranges of the first inclination angle α, the secondinclination angle γ, and the third inclination angle β enable that themolded base 12′ having a better supporting function. For example, thetop side surface 126′ has an enough size facilitating the mounting ofthe lens 30′ and the lens actuator 40′ thereto, and it is ensured thatthe second portion inner side surface 1242′ has a sufficient size tofacilitate mounting of the optical filter 50′ or the optical filterholder 60′. In other words, the first inclination angle α, the secondinclination angle γ, and the third inclination angle β are not preferredto be too large to avoid the length of the top side surface 126′ beingtoo small in order to provide a secure mounting position for the lens30′ or the lens actuator 40′. In addition, the first inclination angle αneeds to be considered that the light window forming block 214′ cannotbe pressed against the lead wires 15′, which may cause the lead wires15′ to break.

Referring to FIG. 54 to FIG. 60 of the drawings, seven examples of therange of the first inclination angle α, the second inclination angle γ,and the third inclination angle β according to the fourth preferredembodiment of the present invention are illustrated. In the sevenexamples, the first portion inner side surface 1241′ of the molded base12′ and the vertical (longitudinal) line define the first inclinationangle α, at least one outer peripheral surfaces 1251′ of the outer sidesurface 125′ along the outer peripheral direction of the molded base 12′and the vertical (longitudinal) line define the second inclination angleγ, the third portion inner side surface 1243′ of the inner side surface124′ of the molded base 12′ and the vertical (longitudinal) line definethe third inclination angle β. A parameter l1 denotes a distance betweenthe connecting position of the first portion inner side surface 1241′ ofthe molded base 12′ and the photosensitive element 13′, and theconnecting position of the first portion inner side surface 1241′ andthe second portion inner side surface 1242′. A parameter l2 denotes adistance between the connecting position of the first portion inner sidesurface 1241′ and the second portion inner side surface 1242′, and theconnecting position of the top side surface 126′ and the third portioninner side surface 1243′. The top side surface 126′ of the molded base12′ has a length 13. A parameter h1 denotes a distance between the topside surface 126′ of the molded base 12′, and the top surface of thebase board 111′ of the circuit board 11′. A parameter h2 denotes adistance between the second portion inner side surface 1242′ and the topsurface of the base board 111′ of the circuit board 11′. A parameter h3denotes a distance between the highest point of the lead wire 15′ andthe photosensitive element 13′.

As shown in FIG. 54 to FIG. 56 of the drawings, according to threeexamples, the wire bonding direction of the photosensitive element 13′and the circuit board 11′ is from the photosensitive element 13′ to thecircuit board 11′. In other words, the photosensitive element 13′ isprovided with one or more photosensitive element connecting pads 132′,wherein the wire bonding tool firstly forms a first end 151′ of each ofthe lead wires 15′ connected to the photosensitive element connectingpad 132′ at the top end of the respective photosensitive elementconnecting pad 132′ and then lifts up a preset position and then movestoward the respective circuit board connecting pad 113′, and finallydescends to form a second end 152′ of each of the lead wires 15′connected to the respective circuit board connecting pad 113′ at the topend of the respective circuit board connecting pad 113′. Accordingly,each of the lead wires 15′ is curvedly extended and the top end of eachof the lead wires 15′ is required not to be crushed by the first portionforming surface 21421′ of the light window forming block 214′ during themolding process, so that the size of the first inclination angle α has amaximum limit.

As shown in FIG. 57 to FIG. 60 of the drawings, in the four examples,the wire bonding direction of the photosensitive element 13′ and thecircuit board 11′ is from the circuit board 11′ to the photosensitiveelement 13′. In other words, the circuit board 11′ is provided with oneor more the circuit board connecting pads 113′, wherein the wire bondingtool firstly forms the second end 152′ of each of the lead wires 15′connected to the respective circuit board connecting pad 113′ at the topend of the respective circuit board connecting pad 113′ and then liftsup to a preset position and then moves toward the respective circuitboard connecting pad 113′ to form the opposite first end 151′ of thelead wire 15′ which is connected to the respective photosensitiveelement connecting pad 132′ at the top end of the respectivephotosensitive element connecting pad 132′, so that each of the leadwires 15′ is curvedly extended and the top end thereof is required notto be crushed by the first portion forming surface 21421′ of the lightwindow forming block 214′ during the molding process, so that the sizeof the first inclination angle α has a maximum limit. In addition, thesecond inclination angle γ and the third inclination angle β may not betoo large such that the second portion inner side surface 1242′ and thetop side surface 126′ have enough sizes. In other words, the ranges ofthe second inclination angle γ and the third inclination angle β arepreferred to have restrictive relations with the above parameters l1,l2, l3, h1, h2 and h3.

As shown in FIG. 54 of the drawings, for example, α is 10°, β is 3°, andγ is 3°. The l1 numerical value is 0.23 mm. The l2 numerical value is1.09 mm. The l3 numerical value is 0.99 mm. The h1 numerical value is1.30′ mm. The h2 numerical value is 0.93 mm. The h3 numerical value is0.17 mm. The first inclination angle α, the second inclination angle γand the third inclination angle β have predetermined minimum numericalvalues.

As shown in FIG. 55 of the drawings, for example, α is 30°, β is 20°,and γ is 30°. The l1 numerical value is 0.38 mm. The l2 numerical valueis 1.25 mm. The l3 numerical value is 0.21 mm. The h1 numerical value is1.34 mm. The h2 numerical value is 0.93 mm. The h3 numerical value is0.17 mm.

As shown in FIG. 56 of the drawings, for example, α is 55°, β is 30°,and γ is 45°. The l1 numerical value is 0.54 mm. The l2 numerical valueis 0.39 mm. The l3 numerical value is 0.42 mm. The h1 numerical value is0.86 mm. The h2 numerical value is 0.38 mm. The h3 numerical value is0.17 mm. When the wire bonding direction of the photosensitive element13′ and the circuit board 11′ is from the photosensitive element 13′ tothe circuit board 11′, the first inclination angle α is preferred tohave a maximum value of 55°.

More specifically, as shown in FIG. 57 of the drawings, for example, αis 10°, β is 30°, and γ is 45°. The l1 numerical value is 0.23 mm. Thel2 numerical value is 1.28 mm. The l3 numerical value is 0.82 mm. The h1numerical value is 1.30′ mm. The h2 numerical value is 0.93 mm. The h3numerical value is 0.13 mm. The first inclination angle α of 10° is apredetermined minimum value. The second inclination angle γ of 45° andthe third inclination angle β of 30° are appropriate maximum values.

As shown in FIG. 58 of the drawings, for example, α is 30°, β is 20°,and γ is 30°. The l1 numerical value is 0.38 mm. The l2 numerical valueis 1.24 mm. The l3 numerical value is 0.21 mm. The h1 numerical value is1.34 mm. The h2 numerical value is 0.93 mm. The h3 numerical value is0.13 mm.

As shown in FIG. 59 of the drawings, for example, α is 45°, β is 15°,and γ is 15°. The l1 numerical value is 0.73 mm. The l2 numerical valueis 0.65 mm. The l3 numerical value is 1.88 mm. The h1 numerical value is1.33 mm. The h2 numerical value is 1.00 mm. The h3 numerical value is0.13 mm.

As shown in FIG. 60 of the drawings, for example, α is 80°, β is 3°, andγ is 3°. The l1 numerical value is 1.57 mm. The l2 numerical value is0.15′ mm. The l3 numerical value is 2.19 mm. The h1 numerical value is1.45 mm. The h2 numerical value is 0.54 mm. The h3 numerical value is0.13 mm. When the wire bonding direction of the photosensitive element13′ and the circuit board 11′ is from the circuit board 11′ to thephotosensitive element 13′, as the lead wire 15′ is preferred not to belift up like as shown FIG. 54 to FIG. 56 of the drawings, the highestpoint of each of the lead wires 15′ is reduced and the first inclinationangle α has a maximum value of 80°. In addition, in the embodiment ofthe present invention, the second inclination angle γ and the thirdinclination angle β are suitable minimum values.

It is understandable that the numerical values of above parameters l1,l2, l3, h1, h2 and h3 are exemplary only and not intended to be limitingthe scope of the present invention. In the practice, the numericalvalues thereof are changed with the specification requirements of thecamera module 100′ and the molded photosensitive assembly 10′.

According to this embodiment of the present invention, it is possible toillustrate from the above-exemplified data that an appropriate range ofthe first inclination angle α is 10° to 80°, and an appropriate range ofthe second inclination angle γ is 3° to 45°, and the appropriate rangeof the third inclination angle β is 3° to 30°.

One skilled in the art will understand that the embodiment of thepresent invention as shown in the drawings and described above isexemplary only and not intended to be limiting.

It will thus be seen that the objects of the present invention have beenfully and effectively accomplished. The embodiments have been shown anddescribed for the purposes of illustrating the functional and structuralprinciples of the present invention and is subject to change withoutdeparture from such principles. Therefore, this invention includes allmodifications encompassed within the spirit and scope of the followingclaims.

What is claimed is:
 1. A molded circuit board assembly for a cameramodule, comprising: at least one circuit board; at least onephotosensitive element provided on said at least one circuit board; andat least one molded base which is integrally molded with said at leastone circuit board to form at least one light window which provides alight path for said at least one photosensitive element for enabling alight reaching said at least one photosensitive element through saidlight window, wherein said at least one molded base has an annular innerside surface which has at least a portion inclinedly extended upwardlyand outwardly from said circuit board, wherein said inner side surfacehas a first portion inner side surface, a second portion inner sidesurface and a third portion inner side surface integrally extended,wherein said first portion inner side surface is integrally andinclinedly extended from said circuit board, said second portion innerside surface is basically extended from said first portion inner sidesurface along a transversal direction, and said third portion inner sidesurface is integrally and inclinedly extended from said second portioninner side surface, such that said at least one molded base iscorrespondingly formed with a base station portion on a bottom side anda step portion integrally extended from said base station portion,wherein said step portion has a relative smaller width than said basestation portion and an inner surface of said base station portion issaid first portion inner side surface of said inner side surface of saidmolded base, an inner surface of said step portion is said third portioninner side surface of said inner side surface of said molded base, and atop surface of said step portion is a top side surface of said moldedbase.
 2. The molded circuit board assembly, as recited in claim 1,further comprises at least one optical filter overlapped on said atleast one photosensitive element and said at least one molded base isintegrally molded on said circuit board and extended to periphery edgesof said at least one optical filter and said at least one photosensitiveelement in such a manner that said at least one optical filter, said atleast one photosensitive element and said at least one molded base ofsaid at least one circuit board are integrally combined together.
 3. Themolded circuit board assembly, as claimed in claim 2, wherein each ofsaid first portion and said third portion of said inner side surface ofsaid at least one molded base and a longitudinal line direction of anoptical axis of the camera module to be produced with said moldedcircuit board assembly define an inclination angle selected from theangle range group consisting of 3° to 30°, 10° to 55° and 10° to 80°therebetween.
 4. The molded circuit board assembly, as claimed in claim3, wherein said at least one circuit board comprises a base board andone or more electronic components provided on said base board, whereinsaid molded base is molded to encapsulate and bury said one or moreelectronic components on said base board of said circuit board therein.5. The molded circuit board assembly, as claimed in claim 4, whereinsaid at least one molded base has an annular outer side surface extendedupwardly and inwardly from said base board of said at least one circuitboard, wherein said outer side surface of said molded base and thelongitudinal line direction of the optical axis of the camera moduledefine a second inclination angle having a range of 3° to 45°therebetween.
 6. The molded circuit board assembly, as claimed in claim5, wherein at an outer side of at least one outer peripheral surface ofsaid outer side surface of said at least one molded base, said baseboard of said at least one circuit board has a press-fit distance W,having a numerical value range 0.1 to 10 mm, such that during a moldingprocess for said molded base, at least one dividing block of a moldingmould is adapted to press-fit at said press-fit distance W of said baseboard of said at least one circuit board, wherein said press-fitdistance W of said base board of said at least one circuit board has anumerical value range of 0.1˜0.6 mm.
 7. The molded circuit boardassembly, as claimed in claim 2, wherein said at least one circuit boardcomprises a base board and one or more electronic components provided onsaid base board, wherein said molded base is molded to encapsulate andbury said one or more electronic components on said base board of saidcircuit board therein.
 8. The molded circuit board assembly, as claimedin claim 7, wherein said at least one molded base has an annular outerside surface extended upwardly and inwardly from said base board of saidat least one circuit board, wherein said outer side surface of saidmolded base and the longitudinal line direction of the optical axis ofthe camera module define a second inclination angle having a range of 3°to 45° therebetween.
 9. The molded circuit board assembly, as claimed inclaim 8, wherein at an outer side of at least one outer peripheralsurface of said outer side surface of said at least one molded base,said base board of said at least one circuit board has a press-fitdistance W, having a numerical value range 0.1 to 10 mm, such thatduring a molding process for said molded base, at least one dividingblock of a molding mould is adapted to press-fit at said press-fitdistance W of said base board of said at least one circuit board,wherein said press-fit distance W of said base board of said at leastone circuit board has a numerical value range of 0.1˜0.6 mm.
 10. Themolded circuit board assembly, as claimed in claim 1, wherein each ofsaid first portion and said third portion of said inner side surface ofsaid at least one molded base and a longitudinal line direction of anoptical axis of the camera module to be produced with said moldedcircuit board assembly define an inclination angle selected from theangle range group consisting of 3° to 30°, 10° to 55° and 10° to 80°therebetween.
 11. The molded circuit board assembly, as claimed in claim10, wherein said at least one circuit board comprises a base board andone or more electronic components provided on said base board, whereinsaid molded base is molded to encapsulate and bury said one or moreelectronic components on said base board of said circuit board therein.12. The molded circuit board assembly, as claimed in claim 11, whereinsaid at least one molded base has an annular outer side surface extendedupwardly and inwardly from said base board of said at least one circuitboard, wherein said outer side surface of said molded base and thelongitudinal line direction of the optical axis of the camera moduledefine a second inclination angle having a range of 3° to 45°therebetween.
 13. The molded circuit board assembly, as claimed in claim12, wherein at an outer side of at least one outer peripheral surface ofsaid outer side surface of said at least one molded base, said baseboard of said at least one circuit board has a press-fit distance W,having a numerical value range 0.1 to 10 mm, such that during a moldingprocess for said molded base, at least one dividing block of a moldingmould is adapted to press-fit at said press-fit distance W of said baseboard of said at least one circuit board, wherein said press-fitdistance W of said base board of said at least one circuit board has anumerical value range of 0.1˜0.6 mm.
 14. The molded circuit boardassembly, as claimed in claim 1, wherein said at least one circuit boardcomprises a base board and one or more electronic components provided onsaid base board, wherein said molded base is molded to encapsulate andbury said one or more electronic components on said base board of saidcircuit board therein.
 15. The molded circuit board assembly, as claimedin claim 14, wherein said at least one molded base has an annular outerside surface extended upwardly and inwardly from said base board of saidat least one circuit board, wherein said outer side surface of saidmolded base and the longitudinal line direction of the optical axis ofthe camera module define a second inclination angle having a range of 3°to 45° therebetween.
 16. The molded circuit board assembly, as claimedin claim 15, wherein at an outer side of at least one outer peripheralsurface of said outer side surface of said at least one molded base,said base board of said at least one circuit board has a press-fitdistance W, having a numerical value range 0.1 to 10 mm, such thatduring a molding process for said molded base, at least one dividingblock of a molding mould is adapted to press-fit at said press-fitdistance W of said base board of said at least one circuit board,wherein said press-fit distance W of said base board of said at leastone circuit board has a numerical value range of 0.1˜0.6 mm.